View source for Middlesex County, New Jersey

{{Short description|County in New Jersey, United States}}
{{Use American English|date=June 2025}}
{{Use mdy dates|date=April 2024}}
{{Infobox U.S. county
 | county               = Middlesex County
 | nickname             = ''The Greatest County in the Land''<ref name=MiddlesexNickname>[http://www.middlesexcountynj.gov/Pages/Main.aspx Middlesex County The Greatest County in the Land] {{webarchive|url=https://web.archive.org/web/20161028084258/http://www.middlesexcountynj.gov/Pages/Main.aspx |date=October 28, 2016 }}, County of Middlesex, New Jersey. Accessed October 27, 2016.</ref>
 | state                = New Jersey
 | type                 = [[List of counties in New Jersey|County]]
 | official_name        = 
 | ex image             = Bishop House, New Brunswick, NJ - campus gate.jpg
 | ex image cap         = The main campus of [[Rutgers University]], New Jersey's flagship of [[higher education]], in [[New Brunswick, New Jersey|New Brunswick]], a center for the sciences, arts, and [[culture|cultural activities]], and the [[county seat]] of Middlesex County
 | ex image size        = 300px
 | flag                 = Middlesx County Flag.png
 | flag size            = 100px
 | seal                 = Middle Seal.JPG
 | founded year         = 1683
 | founded date         = 
 | named for            = [[Middlesex]], England
 | leader_title         = Commissioner director
 | leader_name          = Ronald G. Rios ([[Democratic Party (New Jersey)|D]], term ends December 31, 2024)
 | seat                 = [[New Brunswick, New Jersey|New Brunswick]]<ref name=CountyMap/> 
 | largest city         = [[Edison, New Jersey|Edison]] (population)<br />[[Monroe Township, Middlesex County, New Jersey|Monroe Township]] (area)
 | city type            = municipality
 | area_total_sq_mi     = 322.87
 | area_land_sq_mi      = 309.22
 | area_water_sq_mi     = 13.65
 | area percentage      = 4.2
 | area_footnotes       = <ref name=CensusArea/>
 | population_as_of     = 2020 
 | population_total     = 863162 (3rd in NJ)
 | population_footnotes = <ref name=Census2020/><ref name=LWD2020/>
 | pop_est_as_of        = 2024
 | population_est       = 890119 {{increase}}
 | pop_est_footnotes    = <ref name=Census2020/><ref name=PopEst/>
 | population_density_sq_mi=2791.4
 | population_density_km2 = auto
 | time zone            = Eastern
 | coordinates          = {{Coord|40.44|-74.41|display=inline,title|type:adm2nd_region:US-NJ_source:UScensus1990}}
 | district             = 6th
 | district2            = 12th
 |website={{URL|co.middlesex.nj.us}}}}
{{maplink|frame=yes|zoom=8|id=Q496862|type=shape|text=Interactive map of Middlesex County, New Jersey}}

'''Middlesex County''' is a [[County (United States)|county]] located in the [[North Jersey|north]]-[[Central Jersey|central]] part of the [[U.S. state]] of [[New Jersey]], extending inland from the [[Raritan River|Raritan Valley]] region to the northern portion of the [[Jersey Shore]]. As of the [[2020 United States census]], the county was the state's [[List of counties in New Jersey|third-most populous county]]<ref>[https://www2.census.gov/programs-surveys/popest/tables/2020-2021/counties/totals/co-est2021-chg-34.xlsx Annual and Cumulative Estimates of Resident Population Change for Counties in New Jersey and County Rankings: April 1, 2020 to July 1, 2021], [[United States Census Bureau]]. Accessed June 1, 2022.</ref> with a population of 863,162,<ref name=Census2020/><ref name=LWD2020/> its highest [[United States census|decennial count]] ever and an increase of 53,304 (+6.6%) from the [[2010 United States census|2010 census]] count of 809,858,<ref name=Census2010/> which in turn reflected an increase of 59,696 (8.0%) from the 750,162 counted in the [[2000 United States census|2000 census]].<ref name=Census2000/><ref name=Census2010LWD>Wu, Sen-Yuan. [https://www.nj.gov/labor/labormarketinformation/assets/PDFs/pub/lmv/LMV_1.pdf ''NJ Labor Market Views: Population Keeps Growing in the Most Densely Populated State''], March 15, 2011. Accessed December 26, 2022.</ref> Middlesex is part of the [[New York metropolitan area]]. Many communities within the county serve as [[bedroom suburb|commuter towns]] to and from [[New York City]] and other [[North Jersey|points north]]. The county is part of the [[Central Jersey]] region of the state.<ref>[https://www.nj.gov/governor/news/news/562023/20230824a.shtml Governor Murphy Settles Central Jersey Debate], [[Governor of New Jersey]] [[Phil Murphy]], press release dated August 4, 2023. "Governor Phil Murphy today signed S3206 to promote Central Jersey tourism.... The 'Central Jersey' region will be comprised of, at minimum, the counties of Hunterdon, Mercer, Middlesex, and Somerset."</ref><ref>Willis, David P. [https://www.app.com/story/news/local/new-jersey/2023/02/20/central-jersey-debate-ocean-union-county-nj/69914996007/ "'This is how wars start': Does Central Jersey include both Ocean and Union counties?"], ''[[Asbury Park Press]]'', February 20, 2023. Accessed March 31, 2024. "North Jersey is defined as Sussex, Warren, Morris, Passaic, Bergen, Essex and Hudson counties; South Jersey would be Burlington, Camden, Gloucester, Atlantic, Salem, Cumberland and Cape May counties. But for Central, things get a little tricky. It would include Hunterdon, Somerset, Union, Middlesex, Mercer, Monmouth, and Ocean counties."</ref><ref>[https://bestofnj.com/nj-regions-page/ "Regions: North, Central, South, Shore - Best of NJ"], ''Best of NJ'', Accessed May 30, 2024. "Central Jersey consists of Hunterdon, Mercer, Middlesex, Somerset, and Union County."</ref>

The county is located in the middle of the [[Northeast megalopolis]] of the U.S. Its [[county seat]] is the [[city (New Jersey)|city]] of [[New Brunswick, New Jersey|New Brunswick]],<ref name=CountyMap>[http://www.nj.gov/state/archives/catctytable.html New Jersey County Map], {{Webarchive | url=https://web.archive.org/web/20170313034019/http://www.nj.gov/state/archives/catctytable.html | date=March 13, 2017}} [[New Jersey Department of State]]. Accessed January 20, 2024.</ref> a center for the sciences, arts, and [[culture|cultural activities]], and the [[headquarters]] of the state's flagship academic institution, [[Rutgers University]].<ref>[https://libguides.rutgers.edu/newbrunswick New Brunswick, NJ: Yesterday, Today, Tomorrow], [[Rutgers University]] Libraries. Accessed January 20, 2024. "New Brunswick is the county seat of Middlesex County, New Jersey, and is also the home of Rutgers University–New Brunswick."</ref> The county's most populous place, with 107,588 residents as of the 2020 census, is [[Edison, New Jersey|Edison]],<ref name=EdisonCensus2020>[https://www.census.gov/quickfacts/fact/table/edisontownshipmiddlesexcountynewjersey/ QuickFacts Edison township, Middlesex County, New Jersey] Accessed January 4, 2024.</ref> while [[Monroe Township, Middlesex County, New Jersey|Monroe Township]] covers the largest area of any municipality, at {{convert|42.19|sqmi}}.<ref>[https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2019_Gazetteer/2019_gaz_cousubs_34.txt 2019 Census Gazetteer Files: New Jersey Places], [[United States Census Bureau]]. Accessed January 4, 2023.</ref> Since the 2010 census, the state's [[center of population]] is in [[East Brunswick, New Jersey|East Brunswick]]; the center of population for New Jersey has been in Middlesex County since the [[1900 United States census|1900 census]].<ref>Sweilem, Amira. [https://www.nj.com/data/2022/11/njs-population-center-still-tilts-north-this-town-considers-it-a-badge-of-honor.html "N.J.’s population center still tilts north. This town considers it a badge of honor."], NJ Advance Media for [[NJ.com]], November 27, 2022. Accessed January 20, 2024. "Answer time: East Brunswick has held the statistical center of population title since the 2010 Census.... The U.S. Census runs the calculation every 10 years and it has wobbled around Middlesex County since 1880, straying just once since that time into Somerset County (Warren Township) in 1890. East Brunswick just barely held onto the population center in the 2020 Census calculations.... The new spot is on Hawk Court just off Milltown Road between the NJ Turnpike and Ryders Lane."</ref> Middlesex County hosts an extensive transportation network, including several [[railroad station|rail stations]] along the heavily traveled [[Northeast Corridor Line]] of the [[New Jersey Transit]] [[commuter rail]] system, as well as the intersection of the New Jersey Turnpike and the [[Garden State Parkway]], the state's two busiest motor vehicle roadways, in [[Woodbridge Township, New Jersey|Woodbridge Township]]. Middlesex County calls itself ''The Greatest County in the Land''.<ref name=MiddlesexNickname/>

The county was primarily settled due to its optimal location along the [[Raritan River]].<ref>[http://www.middlesexcountynj.gov/About/Pages/History.aspx History] {{webarchive|url=https://web.archive.org/web/20161017211505/http://www.middlesexcountynj.gov/About/Pages/History.aspx |date=October 17, 2016 }}, Middlesex County, NJ. Accessed March 24, 2018.</ref> Middlesex was originally formed as one of four administrative districts within [[Province of East Jersey]] in 1675, together with [[Bergen County, New Jersey|Bergen]], [[Essex County, New Jersey|Essex]] and [[Monmouth County, New Jersey|Monmouth]] districts. Middlesex County was formed within East Jersey on March 7, 1683.<ref name=Story>Snyder, John P. [http://www.state.nj.us/dep/njgs/enviroed/oldpubs/bulletin67.pdf ''The Story of New Jersey's Civil Boundaries: 1606–1968''], Bureau of Geology and Topography; Trenton, New Jersey; 1969. p. 125. Accessed June 6, 2012.</ref> The population increased so the county was partitioned on October 31, 1693, into the townships of [[Piscataway, New Jersey|Piscataway]], [[Perth Amboy, New Jersey|Perth Amboy]], and Woodbridge. Adjacent [[Somerset County, New Jersey|Somerset County]] was established on May 14, 1688, created from portions of Middlesex County.<ref name=Story/>

The county's first court met in June 1683 in Piscataway, and held session at alternating sites over the next century in Perth Amboy, Piscataway, and Woodbridge before relocating permanently to New Brunswick in 1778.<ref>[http://www.co.middlesex.nj.us/prosecutor/history.asp History of the Grand Jury] {{webarchive|url=https://web.archive.org/web/20131004220044/http://www.co.middlesex.nj.us/prosecutor/history.asp |date=October 4, 2013 }}, Middlesex County, New Jersey. Accessed October 1, 2013. "By June 19, 1683, the first County Court was held at Piscataway. It sat alternately in Piscataway and Woodbridge until 1688 when Perth Amboy was added as one of the three alternate sites. In 1778, New Brunswick became the most prime town in the county and at that time the Middlesex County Courts were transferred there."</ref> Despite its status as a residential, commercial, and industrial stronghold and a centrally accessible transportation hub, Middlesex is also home to an extensive public [[park system]] with expansive [[greenway (landscape)|greenways]], totaling more than {{convert|6300|acres}}.<ref>{{cite web|url=http://www.middlesexcountynj.gov/About/Pages/At%20A%20Glance.aspx|title=At a Glance - Middlesex County, the Greatest County in the Land!|access-date=December 3, 2016|url-status=live|archive-url=https://web.archive.org/web/20161118085819/http://www.middlesexcountynj.gov/About/Pages/At%20A%20Glance.aspx|archive-date=November 18, 2016}}</ref> Middlesex County is most demographically notable as the U.S. county with the highest concentration of [[Indians in the New York City metropolitan area|Asian Indians]], at nearly 20% in 2020, spanning the county's boundaries between [[Little India, Edison/Iselin]] in the north and [[Monroe Township, Middlesex County, New Jersey#Demographics|Monroe Township]] at its southern tip.

==Geography and climate==
Middlesex has a hot-summer [[humid continental climate]] (''Dfa'') which borders a [[humid subtropical climate]] (''Cfa'') on [[Raritan Bay]] and [[Arthur Kill]]. Average monthly temperatures in downtown New Brunswick range from {{Convert|31.9|F|C}} in January to {{Convert|75.6|F|C}} in July, while in South Amboy they range from {{Convert|32.3|F|C}} in January to {{Convert|75.9|F|}} in July.<ref>[http://prism.oregonstate.edu/explorer/ Time Series Values for Individual Locations], [[Oregon State University]]. Accessed June 24, 2023.</ref> In recent years, average temperatures in the county seat of New Brunswick have ranged from a low of {{convert|22|°F}} in January to a high of {{convert|86|°F}} in July, although a record low of {{convert|-13|°F}} was recorded in January 1984 and a record high of {{convert|103|°F}} was recorded in July 1999. Average monthly precipitation ranged from {{convert|2.98|in}} in February to {{convert|5.08|in}} in July.<ref name="weather"/>

According to the [[United States Census Bureau|U.S. Census Bureau]], as of the 2020 Census, the county had a total area of {{convert|322.87|sqmi}}, of which {{convert|309.22|sqmi}} was land (95.8%) and {{convert|13.65|sqmi}} was water (4.2%).<ref name=CensusArea>[https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2020_Gazetteer/2020_gaz_counties_34.txt 2020 Census Gazetteer File for Counties in New Jersey], [[United States Census Bureau]]. Accessed April 1, 2023.</ref> The county is named after the historic English county of [[Middlesex]].<ref>[[Joseph Nathan Kane|Kane, Joseph Nathan]]; and Aiken, Charles Curry. [https://books.google.com/books?id=yC9vFvCuW84C&pg=PA202 ''The American Counties: Origins of County Names, Dates of Creation, and Population Data, 1950-2000''], p. 202. [[Scarecrow Press]], 2005. {{ISBN|0810850362}}. Accessed January 22, 2013.</ref>

Bisected by the [[Raritan River]], the county is topographically typical of [[Central Jersey]] in that it is largely flat. The majority of the county is located on the [[coastal plain|inner coastal plain]], with the remainder of the county being located on the [[Piedmont (United States)|Eastern Piedmont]]. The elevation ranges from [[sea level]] to {{convert|300|ft}} above sea level on a hill scaled by Major Road/ Sand Hill Road near [[U.S. Route 1 in New Jersey|Route 1]] in [[South Brunswick, New Jersey|South Brunswick Township]].<ref>[http://www.peakbagger.com/list.aspx?lid=13320 New Jersey County High Points] {{webarchive|url=https://web.archive.org/web/20150518173742/http://www.peakbagger.com/list.aspx?lid=13320 |date=May 18, 2015 }}, Peakbagger.com. Accessed October 5, 2013.</ref>

Another area with higher elevation in the county is the Perth Amboy Moraine, left by the southern limit of the Laurentide Ice Sheet. Only the far northeastern area of the county was glaciated, and the Perth Amboy Moraine stretches from Perth Amboy, through Woodbridge, Edison and Metutchen, and stradles the border of Edison and South Plainfield before exiting the county. The area includes peaks of over 200 feet.{{Citation needed|date=April 2023}}

{{climate chart
|[[New Brunswick, New Jersey]]
|22|39|3.62
|24|43|2.98
|30|51|4.18
|40|62|4.23
|50|72|4.19
|60|81|4.41
|65|86|5.08
|64|84|4.15
|55|77|4.51
|43|66|3.80
|36|55|3.83
|27|44|4.06
|float=right
|units=imperial
|clear=both
|source=The Weather Channel<ref name="weather">[http://www.weather.com/weather/wxclimatology/monthly/graph/USNJ0348 Monthly Averages for New Brunswick, New Jersey] {{webarchive|url=https://web.archive.org/web/20130708164124/http://www.weather.com/weather/wxclimatology/monthly/graph/USNJ0348 |date=July 8, 2013 }}, [[The Weather Channel]]. Accessed October 13, 2012.</ref>}}

==Demographics==
[[File:New Punjab Club food spread.jpg|thumb|[[Indian cuisine]] is ubiquitously available in Middlesex County.]]
{{US Census population
|1790= 15956
|1800= 17890
|1810= 20381
|1820= 21470
|1830= 23157
|1840= 21893 | 1840n=*
|1850= 28635
|1860= 34812
|1870= 45029
|1880= 52286
|1890= 61754
|1900= 79762
|1910=114426
|1920=162334
|1930=212208
|1940=217077
|1950=264872
|1960=433856
|1970=583813
|1980=595893
|1990=671780
|2000=750162
|2010=809858
|2020=863162
| estyear=2024
| estimate=890119
| estref=<ref name=Census2020/><ref name=PopEst>[https://www2.census.gov/programs-surveys/popest/tables/2020-2024/counties/totals/co-est2023-pop-34.xlsx Annual Estimates of the Resident Population for Counties in New Jersey: April 1, 2020 to July 1, 2024], [[United States Census Bureau]], released March 2025. Accessed March 26, 2025.</ref>
|footnote=Historical sources: 1790-1990<ref>Forstall, Richard L. [https://books.google.com/books?id=sezaSI_LPA8C&pg=PA108 ''Population of states and counties of the United States: 1790 to 1990 from the Twenty-one Decennial Censuses''], pp. 108-109. [[United States Census Bureau]], March 1996. {{ISBN|9780934213486}}. Accessed October 3, 2013.</ref><br />1970-2010<ref name=CPH232>[https://www.census.gov/prod/cen2010/cph-2-32.pdf#page=32 ''New Jersey: 2010 - Population and Housing Unit Counts; 2010 Census of Population and Housing''] {{webarchive|url=https://web.archive.org/web/20130723055400/http://www.census.gov/prod/cen2010/cph-2-32.pdf |archive-url=https://web.archive.org/web/20121019110730/http://www.census.gov/prod/cen2010/cph-2-32.pdf |archive-date=October 19, 2012 |url-status=live |date=July 23, 2013 }}, p. 6, CPH-2-32. [[United States Census Bureau]], August 2012. Accessed August 29, 2016.</ref> 2000<ref name=Census2000>[https://archive.today/20200212084354/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/00_SF1/DP1/0500000US34023 DP-1 - Profile of General Demographic Characteristics: 2000; Census 2000 Summary File 1 (SF 1) 100-Percent Data for Middlesex County, New Jersey], [[United States Census Bureau]]. Accessed January 22, 2013.</ref><br>2010<ref name=Census2010>[https://archive.today/20200212092805/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US34023 DP1 - Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data for Middlesex County, New Jersey], [[United States Census Bureau]]. Accessed January 22, 2013.</ref><ref name=Census2010LWD/> 2020<ref name=Census2020>[https://www.census.gov/quickfacts/middlesexcountynewjersey QuickFacts Middlesex County, New Jersey], [[United States Census Bureau]]. Accessed March 26, 2025.</ref><ref name=LWD2020>[https://www.nj.gov/labor/labormarketinformation/assets/PDFs/census/2020/2020%20pl94%20Tables/2020_Mun/MCD%200_All.pdf Total Population: Census 2010 - Census 2020 New Jersey Municipalities], [[New Jersey Department of Labor and Workforce Development]]. Accessed December 1, 2022.</ref><br />* = Lost territory in previous decade.<ref name=Story/>
}}

===Indian community===
Middlesex County is prominently known for its significant concentration of [[Indians in the New York City metropolitan region|Indians]]. The growing [[Little India (Edison/Iselin)|Little India]] is a Desi-focused commercial strip in Middlesex County, the U.S. county with the highest concentration of Indians.<ref>{{cite web|url=https://www.nj.com/news/2012/11/big_business_in_little_india_c.html|title=Big business in Little India: Commerce flourishes in vibrant ethnic neighborhood|first=Peter|last=Genovese|date=November 16, 2012|website=nj.com}}</ref><ref>{{cite web|url=https://www.saveur.com/article/Travels/Oak-Tree-Road-Iselin-NJ|title=Eat Street: Oak Tree Road, Iselin, N.J.|website=SAVEUR|date=March 31, 2011}}</ref><ref>{{cite news|url=https://www.nytimes.com/2008/04/27/nyregion/nyregionspecial2/27indianj.html|title=A Place Where Indians, Now New Jerseyans, Thrive|author=Joseph Berger|newspaper=The New York Times|date=April 27, 2008 |access-date=August 22, 2016}}</ref> The [[Little India, Edison/Iselin|Oak Tree Road]] strip runs for about one-and-a-half miles through [[Edison, New Jersey|Edison]] and neighboring [[Iselin, New Jersey|Iselin]] in [[Woodbridge Township, New Jersey|Woodbridge Township]], near the area's sprawling [[Chinese in New York City|Chinatown]] and [[Koreans in New York City|Koreatown]], running along [[New Jersey Route 27]].<ref>{{cite news|url=https://www.nytimes.com/2017/03/09/travel/indo-chinese-restaurants-edison-new-jersey.html|title=Indo-Chinese Food Is Hard to Find, Except in New Jersey|first=David|last=Shaftel|newspaper=The New York Times|date=March 9, 2017}}</ref> It is the largest and most diverse [[Desi]] cultural hub in the United States.<ref>{{cite news|url=https://www.wsj.com/articles/little-india-thrives-in-central-new-jersey-1506340801|title='Little India' Thrives in Central New Jersey|first=Kate|last=King|newspaper=Wall Street Journal|date=September 25, 2017|via=www.wsj.com}}</ref><ref>{{cite web|url=https://www.forbes.com/sites/monteburke/2012/06/06/the-ultimate-neighborhood-bank/|title=How Indo-Americans Created The Ultimate Neighborhood Bank|first=Monte|last=Burke|website=Forbes}}</ref> [[Monroe Township, Middlesex County, New Jersey|Monroe Township]] in Middlesex County has experienced a particularly rapid growth rate in its [[Indians in the New York City metropolitan region|Indian American]] population, with an estimated 5,943 (13.6%) as of 2017,<ref name=IndiansMonroe>[https://factfinder.census.gov/bkmk/table/1.0/en/ACS/17_5YR/DP05/0600000US3402347280 DP05: ACS DEMOGRAPHIC AND HOUSING ESTIMATES from the 2013-2017 American Community Survey 5-Year Estimates for Monroe township, Middlesex County, New Jersey] {{Webarchive|url=https://archive.today/20200213155409/https://factfinder.census.gov/bkmk/table/1.0/en/ACS/17_5YR/DP05/0600000US3402347280 |date=February 13, 2020 }}, [[United States Census Bureau]]. Accessed February 11, 2019.</ref> which was 23 times the 256 (0.9%) counted as of the 2000 Census; and [[Diwali]] is celebrated by the township as a [[Hinduism|Hindu]] holiday. [[Carteret, New Jersey|Carteret]]'s [[Punjabi people|Punjabi]] [[Sikh]] community, variously estimated at upwards of 3,000, is the largest concentration of Sikhs in New Jersey.<ref>{{cite news|url=https://www.nytimes.com/2008/06/15/nyregion/nyregionspecial2/15colnj.html|title=Turbans Make Targets, Some Sikhs Find|author=Kevin Coyne|newspaper=The New York Times|date=June 15, 2008 |access-date=April 28, 2019}}</ref> In Middlesex County, election [[ballot]]s are printed in English, [[Spanish language|Spanish]], [[Gujarati language|Gujarati]], [[Hindi]], and [[Punjabi language|Punjabi]].<ref>{{cite web|url=http://www.nj.gov/state/elections/voting-information-vote-by-mail.html|title=State of New Jersey Department of State|publisher=State of New Jersey|access-date=May 29, 2017}}</ref>

===Jewish community===
Along with other counties in New Jersey, Middlesex is also home to a large [[American Jews|Jewish]] community, especially [[Orthodox Judaism|Orthodox]]. The world's largest Jewish gathering outside of Israel occurred in [[Edison, New Jersey|Edison]] on December 1, 2024.<ref name=LargestJewishgatheringWorldCentralNewJersey>{{cite web|url=https://www.tapinto.net/towns/edison/sections/religions-and-spirituality/articles/edison-expo-hall-hosts-world-s-largest-confab-of-rabbis-jewish-leaders-2|title=Edison Expo Hall Hosts 'World's Largest' Confab of Rabbis, Jewish Leaders|author=Tony Gallotto|publisher=TAPintoEdison|date=December 1, 2024|access-date=December 1, 2024}}</ref>

===2020 census===
{| class="wikitable sortable" style="text-align:center;"
|+'''Middlesex County, New Jersey – Racial and ethnic composition'''<br><small>{{nobold|''Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.''}}</small>
!Race / Ethnicity <small>(''NH = Non-Hispanic'')</small>
!Pop 1980<ref name=1980Census>{{Cite web|title=1980 Census of Population - General Social and Economic Characteristics - New Jersey- Table 16 - Total Persons and Spanish Origin Persons by Type of Spanish Origin and Race |url=https://www2.census.gov/library/publications/decennial/1980/volume-1/new-jersey/1980a_njab-03.pdf|website=[[United States Census Bureau]]|page=32/26-32/34}}</ref>
!Pop 1990<ref>{{Cite web |title=1990 Census of Population - General Population Characteristics - New Jersey: Table 4, Table 5, Table 6 - Race and Hispanic Origin |website=[[United States Census Bureau]]|url=https://www2.census.gov/library/publications/decennial/1990/cp-1/cp-1-32-1.pdf|access-date=|page=22-97}}</ref>
!Pop 2000<ref name=2000CensusP004>{{Cite web|title=P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Middlesex County, New Jersey|url=https://data.census.gov/table?g=050XX00US34023&tid=DECENNIALSF12000.P004|website=[[United States Census Bureau]] |access-date= }}</ref>
!Pop 2010<ref name=2010CensusP2>{{Cite web|title=P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Middlesex County, New Jersey|url=https://data.census.gov/cedsci/table?q=p2&g=050XX00US34023&tid=DECENNIALPL2010.P2|website=[[United States Census Bureau]] |access-date= }}</ref>
!style="background-color: #ffffb3;" | Pop 2020<ref name=2020CensusP2>{{Cite web|title=P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Middlesex County, New Jersey|url=https://data.census.gov/cedsci/table?q=p2&g=050XX00US34023&tid=DECENNIALPL2020.P2|website=[[United States Census Bureau]] |access-date= }}</ref>
!% 1980
!% 1990
!% 2000
!% 2010
!style="background-color: #ffffb3;" |% 2020
|-
|[[Non-Hispanic or Latino whites|White]] alone (NH)
|512,201
|516,948
|464,537
|398,724
|style='background: #ffffe6; |333,158
|85.96%
|76.95%
|61.92%
|49.23%
|style='background: #ffffe6; |38.60%
|-
|[[Non-Hispanic or Latino African Americans|Black or African American]] alone (NH)
|34,941
|49,733
|64,435
|71,557
|style='background: #ffffe6; |78,719
|5.86%
|7.40%
|8.59%
|8.84%
|style='background: #ffffe6; |9.12%
|-
|[[Native Americans in the United States|Native American]] or [[Alaska Native]] alone (NH)
|554
|808
|805
|1,193
|style='background: #ffffe6; |1,183
|0.09%
|0.12%
|0.11%
|0.15%
|style='background: #ffffe6; |0.14%
|-
|[[Asian Americans|Asian]] alone (NH)
|12,275
|43,812
|103,788
|172,534
|style='background: #ffffe6; |227,973
|2.06%
|6.52%
|13.84%
|21.30%
|style='background: #ffffe6; |26.41%
|-
|[[Native Hawaiian]] or [[Pacific Islander Americans|Pacific Islander]] alone (NH)
|x <ref>included in the Asian category in the 1980 Census</ref>
|x <ref>included in the Asian category in the 1990 Census</ref>
|206
|156
|style='background: #ffffe6; |192
|x
|x
|0.03%
|0.02%
|style='background: #ffffe6; |0.02%
|-
|[[Race and ethnicity in the United States census|Other race]] alone (NH)
|1,784
|703
|2,046
|2,720
|style='background: #ffffe6; |7,053
|0.30%
|0.10%
|0.27%
|0.34%
|style='background: #ffffe6; |0.82%
|-
|[[Multiracial Americans|Mixed race or Multiracial]] (NH)
|x <ref>not an option in the 1980 Census</ref>
|x <ref>not an option in the 1990 Census</ref>
|12,405
|13,999
|style='background: #ffffe6; |21,197
|x
|x
|1.65%
|1.73%
|style='background: #ffffe6; |2.46%
|-
|[[Hispanic and Latino Americans|Hispanic or Latino]] (any race)
|34,138
|59,776
|101,940
|148,975
|style='background: #ffffe6; |193,687
|5.73%
|8.90%
|13.59%
|18.40%
|style='background: #ffffe6; |22.44%
|-
|'''Total'''
|'''595,893'''
|'''671,780'''
|'''750,162'''
|'''809,858'''
|style='background: #ffffe6; |'''863,162 '''
|'''100.00%'''
|'''100.00%'''
|'''100.00%'''
|'''100.00%'''
|style='background: #ffffe6; |'''100.00%'''
|}
 
As of the [[2020 United States census|Census of 2020]], the county had 863,162 people, 285,906 households, and 209,808 families. The [[population density]] was {{convert|2794|PD/sqmi|PD/km2|1}}. There were 315,521 housing units at an average density of {{convert|1021.4|/sqmi|/km2|1}}. The county's racial makeup was 41.9% [[White (U.S. Census)|White]], 9.8% [[African American (U.S. Census)|African American]], 0.53% [[Native American (U.S. Census)|Native American]], 26.5% [[Asian (U.S. Census)|Asian]], and 9.06% from two or more races. [[Hispanic (U.S. Census)|Hispanic]] or [[Latino (U.S. Census)|Latino]] of any race were 22.4% of the population.

There were 285,906 households, of which 34.6% had children under the age of 18 living with them, 56.9% were [[Marriage|married couples]] living together, 24.2% had a female householder with no husband present, 14.2% had a male householder with no wife present and 26.6% were non-families. 14.8% of all households were made up of individuals, and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.32.

About 21.6% of the county's population was under age 18, 9.3% was from age 18 to 24, 40.1% was from age 15 to 44, and 15.5% was age 65 or older. The median age was 39.3 years. The gender makeup of the county was 49.4% male and 50.5% female. For every 100 females, there were 97.8 males.

The county's median household income was $93,418, and the median family income was $107,149. About 8.8% of the population were below the [[poverty line]], including 11.1% of those under age 18 and 8.8% of those age 65 or over.<ref>{{Cite web|date=2020|title=Middlesex County {{!}} Census Data|url=https://data.census.gov/cedsci/profile?g=0500000US34023|access-date=January 19, 2022|website=United States Census Bureau}}</ref>

===2010 census===
[[File:Fcc2.jpg|thumb|left|Aerial view of [[Monroe Township, Middlesex County, New Jersey|Monroe Township]] housing tracts at the previously [[exurban]] southern tip of Middlesex County in 2010. Since then, significant new housing construction is rendering this area of the county with an increasingly [[suburb]]an environment.]]
The [[2010 United States census]] counted 809,858 people, 281,186 households, and 203,016 families in the county. The [[population density]] was 2,621.6 per square mile (1,012.2/km<sup>2</sup>). There were 294,800 housing units at an average density of 954.3 per square mile (368.5/km<sup>2</sup>). The racial makeup was 58.60% (474,589) [[White (U.S. census)|White]], 9.69% (78,462) [[Black (U.S. census)|Black or African American]], 0.34% (2,777) [[Native American (U.S. census)|Native American]], 21.40% (173,293) [[Asian (U.S. census)|Asian]], 0.03% (251) [[Pacific Islander (U.S. census)|Pacific Islander]], 6.99% (56,569) from [[Race and ethnicity in the United States census|other races]], and 2.95% (23,917) from two or more races. [[Hispanic (U.S. census)|Hispanic or Latino]] of any race were 18.40% (148,975) of the population.<ref name=Census2010/>

Of the 281,186 households, 34.4% had children under the age of 18; 55.9% were married couples living together; 11.8% had a female householder with no husband present and 27.8% were non-families. Of all households, 22.5% were made up of individuals and 8.9% had someone living alone who was 65 years of age or older. The average household size was 2.8 and the average family size was 3.29.<ref name=Census2010/>

22.9% of the population were under the age of 18, 10.2% from 18 to 24, 28.3% from 25 to 44, 26.3% from 45 to 64, and 12.3% who were 65 years of age or older. The median age was 37.2 years. For every 100 females, the population had 96.4 males. For every 100 females ages 18 and older there were 94 males.<ref name=Census2010/>

==Economy==
[[File:Downtown_New_Brunswick_(2022).jpg|thumb|[[New Brunswick, New Jersey|New Brunswick]], nicknamed the ''Hub City'' of the state of New Jersey, is also Middlesex County's seat of government. The city is experiencing new [[high-rise]] construction and [[gentrification]] amidst an academic and cultural renaissance.]]
The [[Bureau of Economic Analysis]] calculated that the county's [[gross domestic product]] was $59.0&nbsp;billion in 2021, which was ranked second in the state and was a 6.8% increase from the prior year.<ref>[https://www.bea.gov/sites/default/files/2022-12/lagdp1222.pdf Gross Domestic Product by County, 2021], [[Bureau of Economic Analysis]], released December 8, 2022. Accessed July 17, 2023.</ref>

Major non-governmental employers in Middlesex County include the following, grouped by ranges of employees:<ref>[http://co.middlesex.nj.us/majemp.asp MAJOR EMPLOYERS LOCATED IN MIDDLESEX COUNTY, NEW JERSEY] {{webarchive|url=https://web.archive.org/web/20101227085614/http://www.co.middlesex.nj.us/majemp.asp |date=December 27, 2010 }}, Middlesex County Department of Economic Development, March 2006. Accessed July 5, 2007.</ref><ref>{{Cite web|title=Major Employers in Middlesex County - Edison Chamber of Commerce, NJ|url=https://www.edisonchamber.com/major-employers-in-middlesex-county|website=www.edisonchamber.com|access-date=May 10, 2020}}</ref>

* 9,010: [[Rutgers University-New Brunswick|Rutgers University]]
*5,000 – 5,249: [[Robert Wood Johnson University Hospital]]
* 3,500 – 3,749: [[Bristol-Myers Squibb]], [[Wakefern Food Corporation]]
* 3,000 – 3,249: [[Merrill Lynch]], [[Novo Nordisk]]
* 2,750 – 2,999: [[Johnson & Johnson]], [[Prudential Financial|Prudential Insurance Company]], Silverline Building Products, [[Saint Peter's University Hospital|St. Peter's University Hospital]], [[Telcordia Technologies]]
* 2,500 – 2,749: [[JFK Medical Center (Edison, New Jersey)|JFK Medical Center]], [[Raritan Bay Medical Center]]
* 2,000 – 2,249: [[Pathmark]]
* 1,750 – 1,999: [[Home Depot]], [[United Parcel Service]]
* 1,500 – 1,749: [[Hess Corporation]], [[Dow Jones & Company]], [[Siemens]]
* 1,250 – 1,499: [[AT&T]], [[BASF]] (formerly Engelhard)
* 1,000 – 1,249: [[Aetna]], [[Fujitsu]], [[Prudential Financial|Prudential]]
* Undisclosed: [[Canon (company)|Canon]], Japanese company specializing in imaging products.

==History==
Clay was once frequently mined in Middlesex County,<ref name="geology">{{Cite web |url=https://dep.nj.gov/wp-content/uploads/njgws/enviroed/county-series/middlesex_county.pdf |title=Geology of Middlesex County in Brief |access-date=February 10, 2025 |publisher=New Jersey Department of Environmental Protection}}</ref> with mining across the [[Raritan Formation]] continuing until the late twentieth century.<ref>{{Cite web| url=https://eps.rutgers.edu/rutgers-core-repository/nj-coastal-plain/raritan-formation |title=Raritan Formation |access-date=February 10, 2025 |publisher=Rutgers University Department of Earth and Planetary Sciences}}</ref> Clay mining activity north of the Raritan River was particularly active near Woodbridge.<ref name="geology"/>

===Etymology===
Middlesex County is named after the historic county of the same name in England.

==Government==
===County government===
[[File:MiddlesexCountyCourthouseNBNJ3.JPG|thumb|[[Civic Square, New Brunswick#Middlesex County Courthouse|Middlesex County Courthouse]]]]
Middlesex County is governed by a [[Board of County Commissioners (New Jersey)|Board of Commissioners]], which is comprised of seven members who are elected [[at-large]] on a partisan basis to serve three-year terms of office on a staggered basis, with either two or three seats coming up for election each year as part of the November general election. At an annual reorganization meeting held in January, the board selects from among its members a Commissioner Director and deputy director. The Commissioner Director appoints commissioners to serve as chairpersons and members on the various committees which oversee county departments.<ref name=Commissioners/> Middlesex County also elects three "constitutional officers" whose existence is laid out in the [[New Jersey Constitution]]. The County Clerk and Surrogate serve five-year terms and the Sheriff serves a three-year term of office.<ref>[http://www.coanj.com/clerks_history.php History of the County Clerk's Office] {{webarchive|url=https://web.archive.org/web/20130826001432/http://coanj.com/clerks_history.php |date=August 26, 2013 }}, Constitutional Officers Association of New Jersey. Accessed October 21, 2017.</ref><ref>[http://www.coanj.com/sheriffs_history.php History of the County Sheriff's Office] {{webarchive|url=https://web.archive.org/web/20130826001634/http://coanj.com/sheriffs_history.php |date=August 26, 2013 }}, Constitutional Officers Association of New Jersey. Accessed October 21, 2017.</ref><ref>[http://www.coanj.com/surrogates_history.php History of the Surrogate's Court] {{webarchive|url=https://web.archive.org/web/20130826000514/http://coanj.com/surrogates_history.php |date=August 26, 2013 }}, Constitutional Officers Association of New Jersey. Accessed October 21, 2017.</ref> In 2016, freeholders were paid $23,438 and the freeholder director was paid an annual salary of $24,428, though Ronald Rios has accepted a salary of $8,340 as director.<ref>Gallo Jr., Bill. [http://www.nj.com/news/index.ssf/2016/03/how_much_your_county_freeholders_others_in_nj_earn.html "Which N.J. county freeholders are paid the most?"] {{webarchive|url=https://web.archive.org/web/20171026113548/http://www.nj.com/news/index.ssf/2016/03/how_much_your_county_freeholders_others_in_nj_earn.html |date=October 26, 2017 }}, [[NJ.com]], March 11, 2016. Accessed October 25, 2017. "Freeholder director: $24,438 (Current Freeholder Director Don Rios has opted to take a salary of only $8,340.); Other freeholders: $23,438"</ref>

{{As of|2025}}, Middlesex County's Commissioners (with terms for director and deputy ending every December 31) are:<ref name=Commissioners>[https://www.middlesexcountynj.gov/government/board-of-county-commissioners Board of County Commissioners], Middlesex County, New Jersey. Accessed June 19, 2022. "County Commissioner is a term used by all 21 of New Jersey's counties to describe county legislators. The residents of Middlesex County's 25 municipalities elect seven persons at-large to staggered three-year terms in the November general election to serve as members of the Board of County Commissioners. Every January, the Board selects one County Commissioner to serve as Director and another to serve as Deputy Director and all County Commissioners serve as chairpersons and members of various committees to oversee County departments."</ref><ref name=ElectedOfficials>[https://www.middlesexcountynj.gov/government/elected-officials Elected Officials], Middlesex County, New Jersey. Accessed June 19, 2022.</ref><ref>[https://www.middlesexcountynj.gov/home/showpublisheddocument/3512/637828473891970000#page=7 2022 County Data Sheet], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>

{| class="wikitable sortable"
|-
! Commissioner 
! Party, Residence, Term 
|-
| Director Ronald G. Rios 
| [[Democratic Party (United States)|D]], [[Carteret, New Jersey|Carteret]], 2027<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/18/22 Ronald G. Rios], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|-
| Deputy Director Shanti Narra 
| D, [[North Brunswick, New Jersey|North Brunswick]], 2027<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/26/22 Shanti Narra], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|-
| Claribel A. "Clary" Azcona-Barber 
| D, [[New Brunswick, New Jersey|New Brunswick]], 2025<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/28/22 Claribel A. Azcona-Barber], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|-
| Charles Kenny 
| D, [[Woodbridge Township, New Jersey|Woodbridge Township]], 2025<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/22/22 Charles Kenny], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|-
|Leslie Koppel 
| D, [[Monroe Township, Middlesex County, New Jersey|Monroe Township]], 2026<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/24/22 Leslie Koppel], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|-
| Chanelle Scott McCullum 
| D, [[Piscataway, New Jersey|Piscataway]], 2025<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/30/22 Chanelle Scott McCullum], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|-
| Charles E. Tomaro 
| D, [[Edison, New Jersey|Edison]], 2026<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/20/22 Charles E. Tomaro], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>
|}

Article VII Section II of the [[New Jersey State Constitution]] requires each county in New Jersey have three elected administrative officials known as "constitutional officers." These officers are the [[County Clerk]] and [[Probate Court|County Surrogate]] (both elected for five-year terms of office) and the [[Sheriff|County Sheriff]] (elected for a three-year term).<ref>[http://www.nj.gov/state/archives/docconst47.html#page16 New Jersey State Constitution (1947), Article VII, Section II, Paragraph 2], [[New Jersey Department of State]]. Accessed June 19, 2022.</ref> Middlesex county's constitutional officers are:<ref name=ElectedOfficials/><ref>[https://www.middlesexcountynj.gov/government/constitutional-officers Constitutional Officers], Middlesex County, New Jersey. Accessed June 19, 2022.</ref>

{| class="wikitable sortable"
|-
! Title
! Representative
|-
| County Clerk
| [[Nancy Pinkin]] (D, [[East Brunswick, New Jersey|East Brunswick]], 2025)<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/34/22 Nancy J. Pinkin], Middlesex County, New Jersey. Accessed June 19, 2022.</ref><ref>[http://coanj.com/member-list/clerks/ Clerks], Constitutional Officers Association of New Jersey. Accessed June 19, 2022.</ref>
|-
| Sheriff
| Mildred S. Scott (D, Piscataway, 2025)<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/32/22 Sheriff Mildred S. Scott], Middlesex County, New Jersey. Accessed June 19, 2022.</ref><ref>[https://coanj.com/member-list/sheriffs/ Sheriffs], Constitutional Officers Association of New Jersey. Accessed June 19, 2022.</ref>
|-
| Surrogate
| Claribel Cortes (D, North Brunswick, 2026)<ref>[https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/36/22 Claribel Cortes], Middlesex County, New Jersey. Accessed June 19, 2022.</ref><ref>[https://coanj.com/member-list/surrogates/ Surrogates], Constitutional Officers Association of New Jersey. Accessed June 19, 2022.</ref>
|}

Republicans have not won countywide in Middlesex County since 1991. The Middlesex County Prosecutor has been Yolanda Ciccone since June 2020.<ref>{{Cite web |title=Staff Directory List {{!}} Middlesex County NJ |url=https://www.middlesexcountynj.gov/Home/Components/StaffDirectory/StaffDirectory/144/22 |access-date=January 2, 2024 |website=www.middlesexcountynj.gov |language=en}}</ref> Middlesex County constitutes Vicinage 8 of the [[New Jersey Superior Court]]; the vicinage is seated at the Middlesex County Courthouse, at 56 Paterson Street in New Brunswick.<ref name="NJ Courts">[https://www.judiciary.state.nj.us/courts/vicinages/middlesex.html Middlesex Vicinage] {{webarchive|url=https://web.archive.org/web/20171010211417/https://www.judiciary.state.nj.us/courts/vicinages/middlesex.html |date=October 10, 2017 }}, New Jersey Courts. Accessed October 21, 2017.</ref> The Middlesex Vicinage also has facilities for the Family Part at the Middlesex County Family Courthouse at 120 New Street, also in New Brunswick; there are also other facilities in New Brunswick and Perth Amboy for Probation.<ref name="NJ Courts" /> The Assignment Judge for Vicinage 8 is Alberto Rivas.<ref name="NJ Courts" />

=== Federal representatives ===
The 6th and 12th congressional districts cover the county.<ref>[http://www.state.nj.us/state/elections/leg-cong-district-info/2012-congressional-districts-by-county.pdf 2012 Congressional Districts by County] {{webarchive|url=https://web.archive.org/web/20120526005115/http://www.state.nj.us/state/elections/leg-cong-district-info/2012-congressional-districts-by-county.pdf |date=May 26, 2012 }}, [[New Jersey Department of State]] Division of Elections. Accessed October 6, 2013.</ref><ref>[http://www.state.nj.us/state/elections/2012-congressional-districts/njcd-2011-plan-components-county-mcd.pdf Plan Components Report] {{webarchive|url=https://web.archive.org/web/20131204063248/http://www.state.nj.us/state/elections/2012-congressional-districts/njcd-2011-plan-components-county-mcd.pdf |date=December 4, 2013 }}, [[New Jersey Department of State]] Division of Elections, December 23, 2011. Accessed October 6, 2013.</ref> {{NJ Congress 06}} {{NJ Congress 12}}

=== State representatives ===
The 25 municipalities of Middlesex County are part of seven legislative districts. 
{| class="wikitable"
|+
!District
!Senator<ref name=Roster>[https://www.njleg.state.nj.us/members/roster.asp Legislative Roster], [[New Jersey Legislature]]. Accessed January 20, 2024.</ref>
!Assembly<ref name=Roster/>
!Municipalities 
|-
|[[New Jersey's 12th legislative district|12th]]
|[[Owen Henry]] [[Republican Party (United States)|(R)]]
|[[Alex Sauickie]] (R)
[[Robert D. Clifton]] (R)
|[[Helmetta, New Jersey|Helmetta]], [[Old Bridge Township, New Jersey|Old Bridge]], and [[Spotswood, New Jersey|Spotswood]]. The remainder of this district covers portions of [[Burlington County, New Jersey|Burlington County]], [[Monmouth County, New Jersey|Monmouth County]] and [[Ocean County, New Jersey|Ocean County]].
|-
|[[New Jersey's 14th legislative district|14th]]
|[[Linda R. Greenstein]] [[Democratic Party (United States)|(D)]]
|[[Wayne DeAngelo]] (D)
[[Tennille McCoy]] (D)
|[[Cranbury, New Jersey|Cranbury Township]], [[Jamesburg, New Jersey|Jamesburg]], [[Monroe Township, Middlesex County, New Jersey|Monroe Township]], and [[Plainsboro Township, New Jersey|Plainsboro]]. The remainder of this district covers portions of [[Mercer County, New Jersey|Mercer County]].
|-
|[[New Jersey's 16th legislative district|16th]]
|[[Andrew Zwicker]] (D)
|[[Mitchelle Drulis]] (D)
[[Roy Freiman]] (D)
|[[South Brunswick, New Jersey|South Brunswick]]. The remainder of this district covers portions of [[Hunterdon County, New Jersey|Hunterdon County]], Mercer County, and [[Somerset County, New Jersey|Somerset County]].
|-
|[[New Jersey's 17th legislative district|17th]]
|[[Bob Smith (New Jersey state senator)|Bob Smith]] (D)
|[[Kevin Egan (New Jersey politician)|Kevin Egan]] (D)
[[Joseph Danielsen]] (D)
|[[New Brunswick, New Jersey|New Brunswick]], [[North Brunswick, New Jersey|North Brunswick]], and [[Piscataway, New Jersey|Piscataway]]. The remainder of this district covers portions of Somerset County.
|-
|[[New Jersey's 18th legislative district|18th]]
|[[Patrick J. Diegnan]] (D)
|[[Robert Karabinchak]] (D)
[[Sterley Stanley]] (D)
|[[East Brunswick, New Jersey|East Brunswick]], [[Edison, New Jersey|Edison]], [[Highland Park, New Jersey|Highland Park]], [[Metuchen, New Jersey|Metuchen]], [[Milltown, New Jersey|Milltown]], [[South Plainfield, New Jersey|South Plainfield]], and [[South River, New Jersey|South River]].
|-
|[[New Jersey's 19th legislative district|19th]]
|[[Joe F. Vitale]] (D)
|[[Craig Coughlin]] (D)
[[Yvonne Lopez]] (D)
|[[Carteret, New Jersey|Carteret]], [[Perth Amboy, New Jersey|Perth Amboy]], [[Sayreville, New Jersey|Sayreville]], [[South Amboy, New Jersey|South Amboy]], and [[Woodbridge Township, New Jersey|Woodbridge]].
|-
|[[New Jersey's 21st legislative district|21st]]
|[[Jon Bramnick]] (R)
|[[Nancy Munoz]] (R)
[[Michele Matsikoudis]] (R)
|[[Dunellen, New Jersey|Dunellen]] and [[Middlesex, New Jersey|Middlesex Borough]]. The remainder of this district covers portions of Somerset County, Morris County, and [[Union County, New Jersey|Union County]].
|}

=== Law enforcement ===
Thomas N. Acken served as the sheriff in 1891. Joseph Spicuzzo served in 2014 and was arrested for bribery.<ref>{{cite news|title=How A Crooked Former Sheriff Persuaded The State To Let Him Out Of Prison|url=http://www.nj.com/middlesex/index.ssf/2016/02/how_a_crooked_sheriff_convinced_the_state_to_let_h.html|newspaper=[[NJ.com]]|date=February 1, 2016|access-date=February 3, 2018|url-status=live|archive-url=https://web.archive.org/web/20180204071222/http://www.nj.com/middlesex/index.ssf/2016/02/how_a_crooked_sheriff_convinced_the_state_to_let_h.html|archive-date=February 4, 2018}}</ref> Mildred S. Scott is the current county sheriff, she was sworn in on January 1, 2011, as the first female sheriff of Middlesex County and the first African-American sheriff in the state of New Jersey.<ref>Strunsky, Steve. [https://www.nj.com/news/2018/01/njs_county_sheriffs_who_are_they_what_are_they_pai.html "The duties, pay and &ndash; for most &ndash; pensions of N.J.'s 21 sheriffs"], NJ Advance Media for [[NJ.com]], January 29, 2018, updated May 15, 2019. Accessed February 9, 2022. "Middlesex County Sheriff Mildred Scott, a Democrat, was elected in 2010, making her the first African-American woman to be elected sheriff in New Jersey, and the first woman sheriff in Middlesex."</ref>

== Politics ==
{{PresHead|place=Middlesex County, New Jersey|source=<ref>{{cite web |url=http://uselectionatlas.org/RESULTS |title=Dave Leip's Atlas of U.S. Presidential Elections |access-date=March 18, 2018 |url-status=live |archive-url=https://web.archive.org/web/20180323225526/https://uselectionatlas.org/RESULTS/ |archive-date=March 23, 2018 }}</ref>}}
<!-- PresRow should be {{PresRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{PresRow|1896|Republican|9,304|5,976|563|New Jersey}}
{{PresRow|1900|Republican|9,347|7,191|399|New Jersey}}
{{PresRow|1904|Republican|10,117|6,996|569|New Jersey}}
{{PresRow|1908|Republican|11,270|7,966|359|New Jersey}}
{{PresRow|1912|Democratic|4,743|8,186|5,470|New Jersey}}
{{PresRow|1916|Republican|11,851|9,975|320|New Jersey}}
{{PresRow|1920|Republican|29,334|11,618|1,136|New Jersey}}
{{PresRow|1924|Republican|34,556|16,373|4,553|New Jersey}}
{{PresRow|1928|Republican|38,714|34,908|328|New Jersey}}
{{PresRow|1932|Democratic|32,673|45,997|2,111|New Jersey}}
{{PresRow|1936|Democratic|32,959|61,679|702|New Jersey}}
{{PresRow|1940|Democratic|41,709|67,140|164|New Jersey}}
{{PresRow|1944|Democratic|45,232|60,504|1,642|New Jersey}}
{{PresRow|1948|Democratic|49,810|61,634|4,766|New Jersey}}
{{PresRow|1952|Republican|73,577|70,234|2,413|New Jersey}}
{{PresRow|1956|Republican|100,071|64,538|677|New Jersey}}
{{PresRow|1960|Democratic|83,025|116,095|436|New Jersey}}
{{PresRow|1964|Democratic|63,370|151,196|1,052|New Jersey}}
{{PresRow|1968|Democratic|96,515|103,339|25,676|New Jersey}}
{{PresRow|1972|Republican|149,033|88,397|5,264|New Jersey}}
{{PresRow|1976|Democratic|113,539|122,859|4,466|New Jersey}}
{{PresRow|1980|Republican|122,354|97,304|21,548|New Jersey}}
{{PresRow|1984|Republican|160,221|104,905|2,727|New Jersey}}
{{PresRow|1988|Republican|143,422|117,149|3,548|New Jersey}}
{{PresRow|1992|Democratic|108,701|128,824|47,746|New Jersey}}
{{PresRow|1996|Democratic|82,433|145,201|30,752|New Jersey}}
{{PresRow|2000|Democratic|93,545|154,998|10,306|New Jersey}}
{{PresRow|2004|Democratic|126,492|166,628|2,685|New Jersey}}
{{PresRow|2008|Democratic|123,695|193,812|4,367|New Jersey}}
{{PresRow|2012|Democratic|107,310|190,555|3,995|New Jersey}}
{{PresRow|2016|Democratic|122,953|193,044|12,560|New Jersey}}
{{PresRow|2020|Democratic|143,467|226,250|5,975|New Jersey}}
{{PresRow|2024|Democratic|162,459|191,802|12,378|New Jersey}}
{{PresFoot}}

After being a Republican stronghold in the late 19th and early 20th centuries, Middlesex County leaned Democratic for much of the 20th century, beginning with [[Franklin Roosevelt]]'s victory in the county in [[1932 United States presidential election|1932]]. Throughout the twentieth century, in close elections, the county would always vote Democratic, sometimes by solid margins, but the county was willing to flip Republican in the midst of nationwide Republican landslides in the 1970s and 1980s. Since 1992, the county has always voted Democratic, however, the 2024 election saw the Democratic margin held to the single digits for the first time since 1992. As of August 1, 2020, there were a total of 545,795 registered voters in Middlesex County, of which 229,982 (42.1%) were registered as [[Democratic Party (United States)|Democrats]], 84,258 (15.4%) were registered as [[Republican Party (United States)|Republicans]] and 224,058 (41.1%) were registered as [[Unaffiliated (New Jersey)|Unaffiliated]]. There were 7,497 (1.4%) voters registered to other parties.<ref>{{Cite web|title=NJ Voter Registration by County|url=https://nj.gov/state/elections/assets/pdf/svrs-reports/2020/2020-08-voter-registration-by-county.pdf |archive-url=https://web.archive.org/web/20200920183502/https://nj.gov/state/elections/assets/pdf/svrs-reports/2020/2020-08-voter-registration-by-county.pdf |archive-date=September 20, 2020 |url-status=live|website=NJ DOS - NJ Division of Elections}}</ref>

{{U.S. SenHead|place=Middlesex County, New Jersey|Seat=1|source=<ref>{{cite web|url=https://uselectionatlas.org/RESULTS/state.php?fips=36&f=0&off=99|title=Dave Leip's Atlas of U.S. Presidential Elections – Sate Data|first=David|last=Leip|website=uselectionatlas.org}}</ref>}}
<!-- U.S. SenRow should be {{U.S. SenRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{U.S. SenRow|2024|Democratic|140,676|188,482|14,067|New Jersey}}
{{U.S. SenRow|2018|Democratic|98,764|148,806|8,051|New Jersey}}
{{U.S. SenRow|2012|Democratic|97,730|178,686|5,344|New Jersey}}
{{U.S. SenFoot}}
{{U.S. SenHead|place=Middlesex County, New Jersey|Seat=2|source=<ref>{{cite web|url=https://uselectionatlas.org/RESULTS/state.php?fips=36&f=0&off=99|title=Dave Leip's Atlas of U.S. Presidential Elections – Sate Data|first=David|last=Leip|website=uselectionatlas.org}}</ref>}}
<!-- U.S. SenRow should be {{U.S. SenRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{U.S. SenRow|2020|Democratic|135,398|221,802|9,110|New Jersey}}
{{U.S. SenRow|2014|Democratic|53,679|83,732|2,244|New Jersey}}
{{U.S. SenRow|2013|Democratic|43,644|61,362|1,284|New Jersey}}
{{U.S. SenFoot}}
{{clear}}

===State elections===
{{Hidden begin
|titlestyle = background:#ccccff;
|title      = Gubernatorial elections results
}}
{| class="wikitable" style="float:right; margin: 1em 1em 1em 0;"
|+ '''Gubernatorial elections results'''<ref>{{cite web|url=https://nj.gov/state/elections/election-information-results.shtml| title=NJ DOS - Division of Elections - Election Results Archive }}</ref>
|-
! Year
! [[Republican Party (United States)|Republican]]
! [[Democratic Party (United States)|Democratic]]
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[2021 New Jersey gubernatorial election|2021]]'''
| style="text-align:center;" {{Party shading/Republican}}|43.4% ''90,297''
| style="text-align:center;" {{Party shading/Democratic}}|'''55.9%''' ''116,352''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[2017 New Jersey gubernatorial election|2017]]'''
| style="text-align:center;" {{Party shading/Republican}}|40.3%' ''70,940''
| style="text-align:center;" {{Party shading/Democratic}}|'''57.2%''' ''100,847''
|-
| style="text-align:center;" {{Party shading/Republican}}|'''[[2013 New Jersey gubernatorial election|2013]]'''
| style="text-align:center;" {{Party shading/Republican}}|'''58.3% ''' ''101,619''
| style="text-align:center;" {{Party shading/Democratic}}|40.2% ''70,225''
|-
| style="text-align:center;" {{Party shading/Republican}}|'''[[2009 New Jersey gubernatorial election|2009]]'''
| style="text-align:center;" {{Party shading/Republican}}|'''47.4%''' ''94,506''
| style="text-align:center;" {{Party shading/Democratic}}|45.0% ''89,732''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[2005 New Jersey gubernatorial election|2005]]'''
| style="text-align:center;" {{Party shading/Republican}}|39.2% ''75,021''
| style="text-align:center;" {{Party shading/Democratic}}|'''56.0%''' ''107,076''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[2001 New Jersey gubernatorial election|2001]]'''
| style="text-align:center;" {{Party shading/Republican}}|35.7% ''66,149''
| style="text-align:center;" {{Party shading/Democratic}}|'''62.7%''' ''117,061''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[1997 New Jersey gubernatorial election|1997]]'''
| style="text-align:center;" {{Party shading/Republican}}|39.3% ''83,149''
| style="text-align:center;" {{Party shading/Democratic}}|'''52.2%''' ''110,354''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[1993 New Jersey gubernatorial election|1993]]'''
| style="text-align:center;" {{Party shading/Republican}}|48.4% ''104,381''
| style="text-align:center;" {{Party shading/Democratic}}|'''49.0%''' ''105,679''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[1989 New Jersey gubernatorial election|1989]]'''
| style="text-align:center;" {{Party shading/Republican}}|35.1% ''67,054''
| style="text-align:center;" {{Party shading/Democratic}}|'''62.9% ''' ''120,157''
|-
| style="text-align:center;" {{Party shading/Republican}}|'''[[1985 New Jersey gubernatorial election|1985]]'''
| style="text-align:center;" {{Party shading/Republican}}|'''65.8% ''' ''113,020''
| style="text-align:center;" {{Party shading/Democratic}}|33.1% ''56,815''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[1981 New Jersey gubernatorial election|1981]]'''
| style="text-align:center;" {{Party shading/Republican}}|47.7% ''89,618''
| style="text-align:center;" {{Party shading/Democratic}}|'''50.9%''' ''95,592''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[1977 New Jersey gubernatorial election|1977]]'''
| style="text-align:center;" {{Party shading/Republican}}|39.7% ''72,477''
| style="text-align:center;" {{Party shading/Democratic}}|'''57.4% ''' ''104,687''
|-
| style="text-align:center;" {{Party shading/Democratic}}|'''[[1973 New Jersey gubernatorial election|1973]]'''
| style="text-align:center;" {{Party shading/Republican}}|25.8% ''44,844''
| style="text-align:center;" {{Party shading/Democratic}}|'''72.3% ''' ''125,871''
|-
|}
{{Hidden end}}

==Education==
===Higher education===
* [[Middlesex County College]] (Edison – main campus; New Brunswick, Perth Amboy)<ref>[http://www.middlesexcc.edu/locations/ Locations] {{webarchive|url=https://web.archive.org/web/20150905054134/http://www.middlesexcc.edu/locations/ |date=September 5, 2015 }}, [[Middlesex County College]]. Accessed September 17, 2015.</ref>
* [[Rutgers University–New Brunswick|Rutgers University New Brunswick Campus]] (New Brunswick, Piscataway)<ref>[http://newbrunswick.rutgers.edu/about/one-community-five-campuses One Community, Five Campuses] {{webarchive|url=https://web.archive.org/web/20150906001604/http://newbrunswick.rutgers.edu/about/one-community-five-campuses |date=September 6, 2015 }}, [[Rutgers University–New Brunswick]]. Accessed September 17, 2015.</ref>
* [[Rutgers Health]] (New Brunswick)<ref>[http://rbhs.rutgers.edu/locations.shtml Locations and Directions] {{webarchive|url=https://web.archive.org/web/20150907101241/http://rbhs.rutgers.edu/locations.shtml |date=September 7, 2015 }}, [[Rutgers Health|Rutgers Biomedical and Health Sciences]]. Accessed September 17, 2015.</ref>
* [[Princeton University]] – Forrestal Campus (Plainsboro)<ref>[http://etcweb.princeton.edu/CampusWWW/Companion/forrestal_campus.html Forrestal Campus] {{webarchive|url=https://web.archive.org/web/20080705091410/http://etcweb.princeton.edu/CampusWWW/Companion/forrestal_campus.html |date=July 5, 2008 }}, [[Princeton University]]. Accessed July 23, 2008.</ref>
* [[DeVry University]] (North Brunswick)<ref>[http://www.devry.edu/universities/new-jersey/north-brunswick-campus.html North Brunswick Campus] {{webarchive|url=https://web.archive.org/web/20150905101138/http://www.devry.edu/universities/new-jersey/north-brunswick-campus.html |date=September 5, 2015 }}, [[DeVry University]]. Accessed September 17, 2015.</ref>
* [[Chamberlain University]] (North Brunswick)
* [[New Brunswick Theological Seminary]] (New Brunswick Campus)<ref>{{Cite web|url=https://www.nbts.edu/about-us/our-campuses/|title=Our Locations|date=March 23, 2015 }}</ref>

===K-12 schools===
School districts, all PreK/K-12 (except as indicated), include:<ref>{{cite web|url=https://www2.census.gov/geo/maps/DC2020/PL20/st34_nj/schooldistrict_maps/c34023_middlesex/DC20SD_C34023.pdf |archive-url=https://web.archive.org/web/20220807023711/https://www2.census.gov/geo/maps/DC2020/PL20/st34_nj/schooldistrict_maps/c34023_middlesex/DC20SD_C34023.pdf |archive-date=August 7, 2022 |url-status=live|title=2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Middlesex County, NJ|publisher=[[United States Census Bureau]]|accessdate=August 6, 2022}} - [https://www2.census.gov/geo/maps/DC2020/PL20/st34_nj/schooldistrict_maps/c34023_middlesex/DC20SD_C34023_SD2MS.txt Text list]</ref>
{{div col|colwidth=30em}}
* [[Carteret School District]]
* [[Cranbury School District]] (K-8)
* [[Dunellen Public Schools]]
* [[East Brunswick Public Schools]]
* [[Edison Township Public Schools]]
* [[Highland Park Public Schools]]
* [[Jamesburg Public Schools]] (K-8)
* [[Metuchen School District]]
* [[Middlesex Board of Education]]
* [[Milltown Public Schools]] (K-8)
* [[Monroe Township School District]]
* [[New Brunswick Public Schools]]
* [[North Brunswick Township Public Schools]]
* [[Old Bridge Township Public Schools]]
* [[Perth Amboy Public Schools]]
* [[Piscataway Township Schools]]
* [[Sayreville Public Schools]]
* [[South Amboy Public Schools]]
* [[South Brunswick Public Schools]]
* [[South Plainfield Public Schools]]
* [[South River Public Schools]]
* [[Spotswood Public Schools]]
* [[West Windsor-Plainsboro Regional School District]]
* [[Woodbridge Township School District]]
{{div col end}}

==Infrastructure==
===Transportation===
====Roads and Highways====
[[Image:MiddlesexCounty 1947.jpg|thumb|right|1947 road map]]
Middlesex County hosts various county roads, state routes, US routes, and interstate highways, as well as [[toll road|toll highways]]. {{As of|2010|5}}, the county had a total of {{convert|2584.38|mi}} of roadways, of which {{convert|2118.08|mi}} were maintained by the municipality, {{convert|292.16|mi}} by Middlesex County and {{convert|131.48|mi}} by the [[New Jersey Department of Transportation]], {{convert|41.49|mi}} by the [[New Jersey Turnpike Authority]] and {{convert|1.17|mi}} by the [[Port Authority of New York and New Jersey]].<ref>[https://www.state.nj.us/transportation/refdata/sldiag/pdf/mileage_Middlesex.pdf Middlesex County Mileage by Municipality and Jurisdiction], [[New Jersey Department of Transportation]], March 2019. Accessed December 25, 2020.</ref><ref>[https://www.state.nj.us/transportation/refdata/sldiag/pdf/00000440__-.pdf Route 440 Straight Line Diagram], [[New Jersey Department of Transportation]], May 2016. Accessed December 25, 2020</ref>

County roads include [[County Route 501 (New Jersey)|CR 501]], [[County Route 514 (New Jersey)|CR 514]], [[County Route 516 (New Jersey)|CR 516]] (only in [[Old Bridge Township, New Jersey|Old Bridge]]), [[County Route 520 (New Jersey)|CR 520]] (only in Old Bridge), [[County Route 522 (New Jersey)|CR 522]], [[County Route 527 (New Jersey)|CR 527]], [[County Route 529 (New Jersey)|CR 529]], [[County Route 531 (New Jersey)|CR 531]], [[County Route 535 (New Jersey)|CR 535]], and [[County Route 539 (New Jersey)|CR 539]] (only in [[Cranbury, New Jersey|Cranbury]]).

[[File:2018-05-20 10 18 51 View north along New Jersey State Route 444 (Garden State Parkway) just south of Exit 120 in Old Bridge Township, Middlesex County, New Jersey.jpg|thumb|Garden State Parkway northbound entering Middlesex County]]
The state routes are: [[New Jersey Route 18|Route 18]], [[New Jersey Route 26|Route 26]] (only in [[North Brunswick, New Jersey|North Brunswick]] – entirely concurrent with Livingston Avenue), [[New Jersey Route 27|Route 27]], [[New Jersey Route 28|Route 28]], [[New Jersey Route 32|Route 32]], [[New Jersey Route 33|Route 33]] (only in [[Monroe Township, Middlesex County, New Jersey|Monroe Township]]), [[New Jersey Route 34|Route 34]] (only in Old Bridge), [[New Jersey Route 35|Route 35]], [[New Jersey Route 91|Route 91]] (concurrent with Jersey Avenue in North Brunswick and entering [[New Brunswick, New Jersey|New Brunswick]]), [[New Jersey Route 171|Route 171]], [[New Jersey Route 172|Route 172]] (only in New Brunswick), [[New Jersey Route 184|Route 184]] and [[New Jersey Route 440|Route 440]].

[[United States Numbered Highway System|U.S. Route]]s include: [[U.S. Route 1 in New Jersey|Route 1]], [[U.S. Route 9 in New Jersey|Route 9]], [[U.S. Route 1/9|Route 1/9]] (only in [[Woodbridge Township, New Jersey|Woodbridge]]) and [[U.S. Route 130|Route 130]].

[[File:Driscoll-Viesser-Edison Bridges - August 30, 2020.jpg|thumb|The [[Driscoll Bridge|Governor Alfred E. Driscoll Bridge]] on the [[Garden State Parkway]] crosses the [[Raritan River]] near its mouth at the [[Raritan Bay]]. The bridge, connecting the communities of [[Woodbridge Township, New Jersey|Woodbridge Township]] to the north and [[Sayreville, New Jersey|Sayreville]] to the south, is the world's widest and one of the busiest motor vehicle bridges<ref>{{cite web|url=http://www.tollroadsnews.com/node/1492 |title=Garden State Parkway opens world's widest bridge - 15 lanes |publisher=TOLLROADSnews, Peter Samuel |access-date=2011-06-06 |url-status=dead |archive-url=https://web.archive.org/web/20120323215304/https://www.tollroadsnews.com/node/1492 |archive-date=2012-03-23 }}</ref>]]
The county also includes some limited access highways and Interstates as well. Middlesex County hosts the southern end of [[Interstate 287|I-287]] which turns into [[New Jersey Route 440|Route 440]] that connects to the [[Outerbridge Crossing]]. The [[Garden State Parkway]] passes through the eastern part of the county, which features nine interchanges and the northern start/end of the split-roadways ([[Local-express lanes|Express & Local Lanes]]). The [[New Jersey Turnpike]] carries [[Interstate 95 in New Jersey|I-95]] through the center of the county. The Turnpike has five interchanges in Middlesex County: Exit 12 in [[Carteret, New Jersey|Carteret]], Exit 11 in [[Woodbridge Township, New Jersey|Woodbridge]], Exit 10 in [[Edison, New Jersey|Edison]], Exit 9 in [[East Brunswick, New Jersey|East Brunswick]] and Exit 8A in [[Monroe Township, Middlesex County, New Jersey|Monroe Township]].<ref>[http://www.njta.com/travel-resources/travel-map Travel Map] {{webarchive|url=https://web.archive.org/web/20171025022104/http://www.njta.com/travel-resources/travel-map |date=October 25, 2017 }}, [[New Jersey Turnpike Authority]]. Accessed October 24, 2017.</ref>

The New Jersey Department of Transportation has upgraded the Route 18 "avenue" to a freeway between the Route 1 interchange all the way up to the new 18 Extension in [[Piscataway, New Jersey|Piscataway]].<ref>[http://www.state.nj.us/transportation/about/press/2012/021512.shtm NJDOT breaks ground on project to completeRoute 18 extension to Interstate 287 in Piscataway; Project is designed to improve mobility and promote economic development in central New Jersey] {{webarchive|url=https://web.archive.org/web/20120402205216/http://www.state.nj.us/transportation/about/press/2012/021512.shtm |date=April 2, 2012 }}, [[New Jersey Department of Transportation]] press release, dated February 15, 2012. Accessed October 6, 2013.</ref>

The Turnpike Authority planned to build [[New Jersey Route 92|Route 92]], which was to start near the intersection of Ridge Road & Route 1 in [[South Brunswick, New Jersey|South Brunswick]] to Interchange 8A in Monroe Township. This plan was cancelled on December 1, 2006.

The southern end of the "dual-dual" configuration (inner car lanes and outer truck lanes) used to be one mile south of Interchange 8A at the border of [[Cranbury, New Jersey|Cranbury]] and Monroe Township. It was relocated to Exit 6 in [[Mansfield Township, Burlington County, New Jersey|Mansfield Township]] in [[Burlington County, New Jersey|Burlington County]] after the Turnpike widening project was completed in early November 2014.<ref>[http://www.state.nj.us/turnpike/documents/NEWS_RELEASE_Gov_Christie_Commissioner_Fox_cut_ribbon_Turnpike_Widening.pdf Gov. Christie, NJDOT Commissioner FoxPraise $2.3 Billion NJ Turnpike Infrastructure Investment Project] {{webarchive|url=https://web.archive.org/web/20141103174930/http://www.state.nj.us/turnpike/documents/NEWS_RELEASE_Gov_Christie_Commissioner_Fox_cut_ribbon_Turnpike_Widening.pdf |date=November 3, 2014 }}, [[New Jersey Turnpike Authority]]. Accessed November 3, 2014.</ref>

{{Further|List of county routes in Middlesex County, New Jersey}}

====Public transportation====
[[File:Edison station - October 2019.jpg|thumb|[[Edison station]], located in the township of [[Edison, New Jersey|Edison]], is a stop on [[New Jersey Transit Rail Operations|New Jersey Transit]]'s [[Northeast Corridor Line]]]]
[[NJ Transit]] provides Middlesex County with frequent [[commuter rail]] service along the [[North Jersey Coast Line]],<ref>[http://www.njtransit.com/rg/rg_servlet.srv?hdnPageAction=LineDetailsTo&selLine=NJCL North Jersey Coast Line] {{webarchive|url=https://web.archive.org/web/20130723025516/http://www.njtransit.com/rg/rg_servlet.srv?hdnPageAction=LineDetailsTo&selLine=NJCL |date=July 23, 2013 }}, [[NJ Transit]]. Accessed August 24, 2014.</ref> [[Northeast Corridor Line]],<ref>[http://www.njtransit.com/rg/rg_servlet.srv?hdnPageAction=LineDetailsTo&selLine=NEC Northeast Corridor Line] {{webarchive|url=https://web.archive.org/web/20140712073924/http://www.njtransit.com/rg/rg_servlet.srv?hdnPageAction=LineDetailsTo&selLine=NEC |date=July 12, 2014 }}, [[NJ Transit]]. Accessed August 24, 2014.</ref> and [[Raritan Valley Line]].<ref>[http://www.njtransit.com/rg/rg_servlet.srv?hdnPageAction=LineDetailsTo&selLine=RARV Raritan Valley Line] {{webarchive|url=https://web.archive.org/web/20131015103641/http://www.njtransit.com/rg/rg_servlet.srv?hdnPageAction=LineDetailsTo&selLine=RARV |date=October 15, 2013 }}, [[NJ Transit]]. Accessed August 24, 2014.</ref> The North Jersey Coast Line runs through the eastern part of the county. The Northeast Corridor Line runs through the northern and central part of the county. The Raritan Valley Line serves [[Dunellen station|Dunellen]] and is accessible to other communities along the county's northern border with [[Union County, New Jersey|Union]] and [[Somerset County, New Jersey|Somerset]] counties.

[[Intercity rail]] service is provided by [[Amtrak]]. The routes that run through Middlesex County are the ''[[Acela Express]]'', ''[[Keystone Service|Keystone]]'', ''[[Northeast Regional (Amtrak)|Northeast Regional]]'', and ''[[Vermonter (train)|Vermonter]]'' services, although only the ''Keystone'' and ''Northeast Regional'' have regular stops within Middlesex County, at either [[New Brunswick station|New Brunswick]] or [[Metropark station|Metropark]] station. The ''Acela'' service also occasionally stops at Metropark.

Bus service in Middlesex County is provided by New Jersey Transit, [[Coach USA]]'s [[Suburban Transit]], the extensive [[Rutgers Campus Buses|Rutgers Campus bus network]],<ref>[https://ipo.rutgers.edu/dots/buses-shuttle Campus Buses/Shuttle Service], [[Rutgers University]]. Accessed November 6, 2019.</ref> the MCAT shuttle system,<ref>[http://www.middlesexcountynj.gov/Government/Departments/IM/Pages/MCAT/Middlesex%20County%20Area%20Transit%20(MCAT).aspx Middlesex County Area Transit (MCAT)], Middlesex County. Accessed November 6, 2019.</ref> and DASH buses.<ref>[http://www.ridewise.org/display.php?sc=PT&adid=336 DASH Bus Routes] {{webarchive|url=https://web.archive.org/web/20130615140428/http://www.ridewise.org/display.php?sc=PT&adid=336 |date=June 15, 2013 }}, Ridewise. Accessed October 9, 2016.</ref> There are bus routes that serve all townships in the county on weekdays,<ref>[https://kmm.org/wp-content/uploads/2020/02/Middlesex_County_Transit_Guide_2019_WEB.pdf Middlesex County Transit Guide], Middlesex County. Accessed April 1, 2023.</ref> and studies are{{As of?|date=September 2024}} being conducted to create the [[New Brunswick Bus Rapid Transit]] system.{{Citation needed|date=September 2024}}

===Healthcare===
The county offers more than 1,900 [[inpatient]] beds among five major [[hospital]]s.<ref>[http://www.co.middlesex.nj.us/About/Pages/Health-Care.aspx Health Care] {{webarchive|url=https://web.archive.org/web/20150918000515/http://www.co.middlesex.nj.us/About/Pages/Health-Care.aspx |date=September 18, 2015 }}, Middlesex County, New Jersey. Accessed September 17, 2015.</ref><ref>[http://www.villageprofile.com/newjersey/middlesexcounty/09/topic.html Healthcare in Middlesex County, New Jersey] {{webarchive|url=https://web.archive.org/web/20171022141455/http://www.villageprofile.com/newjersey/middlesexcounty/09/topic.html |date=October 22, 2017 }}, Middlesex County, NJ Convention & Visitors Bureau. Accessed September 17, 2015.</ref>
{| class="wikitable"
|+Hospitals
!Hospital
!Town
!Type
!Beds
!Health Network
|-
|[[JFK Medical Center (Edison, New Jersey)|JFK Medical Center]]
|Edison
|Acute
|498<ref>[http://www.jfkmc.org/about-us/about-jfk About JFK Medical Center] {{webarchive|url=https://web.archive.org/web/20150906083829/http://jfkmc.org/about-us/about-jfk|date=September 6, 2015}}, JFK Medical Center. Accessed September 17, 2015. "Founded in 1967, JFK Medical Center is a non-profit, 498-bed community hospital, serving residents of Middlesex, Union and Somerset counties in Central New Jersey."</ref>
|[[Hackensack Meridian Health]]
|-
|[[Children's Specialized Hospital|PSE&G Children's Specialized Hospital]]
|New Brunswick
|Pediatric Rehabilitation
|140<ref>[http://health.usnews.com/best-hospitals/area/nj/childrens-specialized-hospital-pseg-6221610 Children's Specialized Hospital], ''[[U.S. News & World Report]]''. Accessed February 9, 2022.</ref>
|[[RWJBarnabas Health]]
|-
|[[Raritan Bay Medical Center|Raritan Bay Medical Center (Old Bridge)]]
|Old Bridge
|Acute
|113<ref name="RBMC">[https://www.rbmc.org/fact-sheet/ Fact Sheet] {{webarchive|url=https://web.archive.org/web/20150905122851/https://www.rbmc.org/fact-sheet/|date=September 5, 2015}} Raritan Bay Medical Center. Accessed September 17, 2015. "Licensed for 501 beds with a medical staff of more than 600, RBMC provides medical-surgical, maternity, pediatric, diagnostic imaging, laboratory and general and critical care, as well as adult behavioral health, emergency and interventional cardiac and same day surgery services... 388 licensed beds at Perth Amboy location; 113 licensed beds at Old Bridge location"</ref>
|Hackensack Meridian Health
|-
|[[Raritan Bay Medical Center|Raritan Bay Medical Center (Perth Amboy)]]
|Perth Amboy
|Acute
|388<ref name="RBMC" />
|Hackensack Meridian Health
|-
|[[Robert Wood Johnson University Hospital]]
|New Brunswick
|Major Teaching
|465<ref>[http://www.rwjuh.edu/rwjuh/about.aspx About] {{webarchive|url=https://web.archive.org/web/20150905130242/http://www.rwjuh.edu/rwjuh/about.aspx|date=September 5, 2015}}, [[Robert Wood Johnson University Hospital]]. Accessed September 17, 2015.</ref>
|RWJBarnabas Health
|-
|[[The Bristol-Myers Squibb Children's Hospital]]
|New Brunswick
|Acute Pediatric
|105<ref>{{Cite web|title=The Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson University Hospital|url=https://www.childrenshospitals.org/Directories/Hospital-Directory/P-T/The-BristolMyers-Squibb-Childrens-Hospital-at-Robert-Wood-Johnson-University-Hospital|website=www.childrenshospitals.org|access-date=March 22, 2020}}</ref>
|RWJBarnabas Health
|-
|Rutgers Cancer Institute of New Jersey
|New Brunswick
|Research, Cancer
|
|RWJBarnabas Health
|-
|[[Saint Peter's University Hospital|St. Peter's University Hospital]]
|New Brunswick
|Acute Teaching
|478<ref>[http://www.saintpetershcs.com/saintpetersuh/ Home Page] {{webarchive|url=https://web.archive.org/web/20110110073044/http://www.saintpetershcs.com/saintpetersuh/|date=January 10, 2011}}, St. Peter's University Hospital. Accessed September 17, 2015. "From our simple beginnings in 1907, Saint Peter's has grown to become a technologically advanced, 478-bed teaching hospital that provides a broad array of services to the community. Saint Peter's University Hospital, a member of the Saint Peter's Healthcare System, is a non-profit, acute care facility sponsored by the Roman Catholic Diocese of Metuchen, NJ."</ref>
|Saint Peters HCS
|-
|[[Penn Medicine Princeton Medical Center]]
|Plainsboro
|Acute Teaching
|305<ref>[http://www.princetonhcs.org/phcs-home/whats-happening/phcs-news--information/phcs-facts.aspx PHCS Facts] {{webarchive|url=https://web.archive.org/web/20150921033316/http://www.princetonhcs.org/phcs-home/whats-happening/phcs-news--information/phcs-facts.aspx|date=September 21, 2015}}, [[University Medical Center of Princeton at Plainsboro]]. Accessed September 17, 2015.</ref>
|[[Penn Medicine]]
|}

==Municipalities==
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The 25 municipalities in Middlesex County (with 2010 Census data for population, housing units and area in square miles) are:<ref>[https://archive.today/20150420011806/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY10/0500000US34023 GCT-PH1: Population, Housing Units, Area, and Density: 2010 - County &ndash; County Subdivision and Place from the 2010 Census Summary File 1 for Middlesex County, New Jersey], [[United States Census Bureau]]. Accessed January 19, 2014.</ref> Other, [[Local government in New Jersey#Unincorporated communities|unincorporated communities]] in the county are listed next to their parent municipality. Many of these areas are [[census-designated place]]s that have been defined by the [[United States Census Bureau]] for enumeration purposes within a [[Township (New Jersey)|Township]] and for which 2010 population data is included in parentheses.

[[Image:Middlesex County, New Jersey Municipalities.png|thumb|upright=1.35|left|Index map of County municipalities (see map key index in table below)]]
{| class="wikitable sortable"
|-
! Municipality
! Map<br />key
! Municipal<br />type
! Population
! Housing<br />units
! Total<br />area
! Water<br />area
! Land<br />area
! Pop.<br />density
! Housing<br />density
!School District
! Unincorporated communities
|-
|[[Carteret, New Jersey|Carteret]] || 1 || Borough || 25,326 || 8,148 || 5.00 || 0.58 || 4.42 || 5,171.1 || 1,844.4 
|[[Carteret School District|Carteret]]|| [[Chrome, New Jersey|Chrome]]<br />[[West Carteret, New Jersey|West Carteret]]
|-
|[[Cranbury, New Jersey|Cranbury]] || 24 || Township || 3,842 || 1,371 || 13.40 || 0.15 || 13.25 || 291.2 || 103.5 
|[[Princeton Public Schools|Princeton]] (9–12) ([[Sending/receiving relationship|S/R]])<br>[[Cranbury School District|Cranbury]] (PK-8)
| [[Cranbury (CDP), New Jersey|Cranbury CDP]] (2,400)<br />[[Cranbury Station, New Jersey|Cranbury Station]]<br />[[Wyckoffs Mills, New Jersey|Wyckoffs Mills]]
|-
|[[Dunellen, New Jersey|Dunellen]] || 14 || Borough || 7,637 || 2,683 || 1.05 || 0.00 || 1.05 || 6,894.8 || 2,559.7 
|[[Dunellen Public Schools|Dunellen]]||
|-
|[[East Brunswick, New Jersey|East Brunswick]] || 20 || Township || 49,715 || 17,367 || 22.27 || 0.57 || 21.70 || 2,189.6 || 800.4 
|[[East Brunswick Public Schools|East Brunswick]]|| [[Brookview, New Jersey|Brookview]]<br />[[Dunhams Corner, New Jersey|Dunhams Corner]]<br />[[Fairview Knolls, New Jersey|Fairview Knolls]]<br />[[Farrington Lake Heights, New Jersey|Farrington Lake Heights]]<br />[[Gillilandtown, New Jersey|Gillilandtown]]<br />[[Halls Corner, New Jersey|Halls Corner]]<br />[[Herberts, New Jersey|Herberts]]<br />[[Jamesburg Park, New Jersey|Jamesburg Park]]<br />[[Lawrence Brook Manor, New Jersey|Lawrence Brook Manor]]<br />[[Newton Heights, New Jersey|Newton Heights]]<br />[[Old Bridge (unincorporated community), New Jersey|Old Bridge]]<br />[[Orchard Heights, New Jersey|Orchard Heights]]<br />[[Patricks Corner, New Jersey|Patricks Corner]]<br />[[Paulas Corner, New Jersey|Paulas Corner]]<br />[[Tanners Corner, New Jersey|Tanners Corner]]<br />[[Washington Heights, New Jersey|Washington Heights]]<br />[[Westons Mills, New Jersey|Westons Mills]]
|-
|[[Edison, New Jersey|Edison]] || 17 || Township || 107,588 || 36,302 || 30.64 || 0.70 || 29.94 || 3,339.0 || 1,212.5 
|[[Edison Township Public Schools|Edison Township]]|| [[Bonhamtown, New Jersey|Bonhamtown]]<br />[[Clara Barton, New Jersey|Clara Barton]]<br />[[Greensand, New Jersey|Greensand]]<br />[[Haven Homes, New Jersey|Haven Homes]]<br />[[Lahiere, New Jersey|Lahiere]]<br />[[Lincoln Park, Edison, New Jersey|Lincoln Park]]<br />[[Lindenau, New Jersey|Lindenau]]<br />[[Martins Landing, New Jersey|Martins Landing]]<br />[[Menlo Park, New Jersey|Menlo Park]]<br />[[New Dover, New Jersey|New Dover]]<br />[[New Durham, Middlesex County, New Jersey|New Durham]]<br />[[Nixon, New Jersey|Nixon]]<br />[[North Edison, New Jersey|North Edison]]<br />[[Oak Tree, New Jersey|Oak Tree]]<br />[[Phoenix, Edison, New Jersey|Phoenix]]<br />[[Potters, New Jersey|Potters]]<br />[[Pumptown, New Jersey|Pumptown]]<br />[[Raritan Manor, New Jersey|Raritan Manor]]
<br>[[Livingston Campus (Rutgers University)|Rutgers University-Livingston Campus]] CDP (part; 3,545)<br />[[Sand Hills, Edison and Woodbridge, New Jersey|Sand Hills]]<br />[[Stelton, New Jersey|Stelton]]<br />[[Valentine, New Jersey|Valentine]]<br />[[Washington Park, New Jersey|Washington Park]]
|-
|[[Helmetta, New Jersey|Helmetta]] || 7 || Borough || 2,455 || 920 || 0.91 || 0.06 || 0.85 || 2,562.9 || 1,082.6 
|[[Spotswood Public Schools|Spotswood]]||
|-
|[[Highland Park, New Jersey|Highland Park]] || 11 || Borough || 15,072 || 6,203 || 1.82 || 0.01 || 1.81 || 7,728.1 || 3,428.5 
|[[Highland Park Public Schools|Highland Park]]||
|-
|[[Jamesburg, New Jersey|Jamesburg]] || 8 || Borough || 5,783 || 2,267 || 0.88 || 0.01 || 0.88 || 6,741.8 || 2,583.9 
|[[Monroe Township School District|Monroe Township]] (9–12) ([[Sending/receiving relationship|S/R]])<br>[[Jamesburg Public Schools|Jamesburg]] (PK-8)
|
|-
|[[Metuchen, New Jersey|Metuchen]] || 12 || Borough || 15,049 || 5,440 || 2.77 || 0.00 || 2.76 || 4,910.4 || 1,967.9 
|[[Metuchen School District|Metuchen]]|| [[Jefferson Park, New Jersey|Jefferson Park]]<br />[[Robinvale, New Jersey|Robinvale]]
|-
|[[Middlesex, New Jersey|Middlesex]] || 15 || Borough || 14,636 || 5,148 || 3.54 || 0.02 || 3.52 || 3,876.2 || 1,463.5 
|[[Middlesex Board of Education|Middlesex]]||
|-
|[[Milltown, New Jersey|Milltown]] || 9 || Borough || 7,037 || 2,698 || 1.60 || 0.04 || 1.55 || 4,443.0 || 1,739.0 
|[[Spotswood Public Schools|Spotswood]] (9–12) ([[Sending/receiving relationship|S/R]])<br>[[Milltown Public Schools|Milltown]] (PK-8)
|
|-
|[[Monroe Township, Middlesex County, New Jersey|Monroe Township]] || 23 || Township || 48,594 || 18,002 || 42.23 || 0.26 || 41.97 || 932.3 || 428.9 
|[[Monroe Township Public Schools|Monroe Township]]|| [[Applegarth, New Jersey|Applegarth]]<br />[[Clearbrook, New Jersey|Clearbrook]]<br />[[Clearbrook, New Jersey|Clearbrook]] CDP (2,909)<br />[[Concordia, New Jersey|Concordia]] CDP (2,445)<br>[[Encore at Monroe, New Jersey|Encore at Monroe]] CDP (625)<br>[[Forsgate, New Jersey|Forsgate]] CDP (2,056)<br />[[Gravel Hill, New Jersey|Gravel Hill]]<br />[[Half Acre, New Jersey|Half Acre]]<br />[[Hoffman, New Jersey|Hoffman]]<br />[[Jamesburg Gardens, New Jersey|Jamesburg Gardens]]<br />[[Matchaponix, New Jersey|Matchaponix]]<br />[[Middlesex Downs, New Jersey|Middlesex Downs]]<br>[[Monroe Manor, New Jersey|Monroe Manor]] CDP (2,178)<br />[[Mounts Mills, New Jersey|Mounts Mills]]<br />[[Old Church, New Jersey|Old Church]]<br />[[Outcalt, New Jersey|Outcalt]]<br>[[The Ponds, New Jersey|The Ponds]] CDP (941)<br />[[Prospect Plains, New Jersey|Prospect Plains]]<br>[[Regency at Monroe, New Jersey|Regency at Monroe]] CDP (2,036)<br>[[Renaissance at Monroe, New Jersey|Renaissance at Monroe]] CDP (637)<br />[[Rossmoor, New Jersey|Rossmoor]] CDP (2,992)<br />[[Shore Road Estates, New Jersey|Shore Road Estates]]<br />[[Spotswood Manor, New Jersey|Spotswood Manor]]<br>[[Stonebridge, New Jersey|Stonebridge]] CDP (1,616)<br />[[Texas, New Jersey|Texas]]<br />Tracy<br />[[Union Valley, New Jersey|Union Valley]]<br />[[Whittingham, New Jersey|Whittingham]] CDP (2,348)<br />[[Wyckoffs Mills, New Jersey|Wyckoffs Mills]]
|-
|[[New Brunswick, New Jersey|New Brunswick]] || 10 || City || 55,266 || 15,053 || 5.79 || 0.56 || 5.23 || 10,556.4 || 2,879.7 
|[[New Brunswick Public Schools|New Brunswick]]|| [[Edgebrook, Middlesex County, New Jersey|Edgebrook]]<br />[[Feaster Park, New Jersey|Feaster Park]]<br />[[Lincoln Park, New Brunswick, New Jersey|Lincoln Park]]<br />[[Raritan Gardens, New Jersey|Raritan Gardens]]<br />[[Westons Mills, New Jersey|Westons Mills]]
|-
|[[North Brunswick, New Jersey|North Brunswick]] || 21 || Township || 43,905 || 15,045 || 12.27 || 0.27 || 12.00 || 3,396.2 || 1,254.1 
|[[North Brunswick Township Public Schools|North Brunswick Township]]|| [[Adams, New Jersey|Adams]]<br />[[Berdines Corner, New Jersey|Berdines Corner]]<br />[[Black Horse, New Jersey|Black Horse]]<br />[[Franklin Park, Middlesex County, New Jersey|Franklin Park]]<br />[[Georges Road, New Jersey|Georges Road]]<br />[[Maple Meade, New Jersey|Maple Meade]]<br />[[Patricks Corner, New Jersey|Patricks Corner]]<br />[[Red Lion, Middlesex County, New Jersey|Red Lion]]
|-
|[[Old Bridge Township, New Jersey|Old Bridge]] || 19 || Township || 66,876 || 24,638 || 40.78 || 2.72 || 38.06 || 1,717.7 || 647.3 
|[[Old Bridge Township Public Schools|Old Bridge Township]]|| [[Browntown, New Jersey|Browntown]]<br />[[Brownville, New Jersey|Brownville]] CDP (2,383)<br />[[Brunswick Gardens, New Jersey|Brunswick Gardens]]<br />[[Cheesequake, New Jersey|Cheesequake]]<br />[[Cottrell Corners, New Jersey|Cottrell Corners]]<br />[[Laurence Harbor, New Jersey|Laurence Harbor]] CDP (6,635)<br />[[Madison Park, New Jersey|Madison Park]] CDP (8,050)<br />[[Matchaponix, New Jersey|Matchaponix]]<br />[[Moerls Corner, New Jersey|Moerls Corner]]<br />[[Morristown, Middlesex County, New Jersey|Morristown]]<br />[[Old Bridge (CDP), New Jersey|Old Bridge CDP]] (27,210)<br />[[Parlin, New Jersey|Parlin]]<br />[[Redshaw Corner, New Jersey|Redshaw Corner]]<br />[[Runyon, New Jersey|Runyon]]<br />[[Sayerwood South, New Jersey|Sayerwood South]]<br />[[South Old Bridge, New Jersey|South Old Bridge]]<br />[[Texas, New Jersey|Texas]]
|-
|[[Perth Amboy, New Jersey|Perth Amboy]] || 2 || City || 55,436 || 16,556 || 5.96 || 1.26 || 4.70 || 10,806.8 || 3,521.0 
|[[Perth Amboy Public Schools|Perth Amboy]]|| [[Barber, New Jersey|Barber]]<br />[[Harbor Terrace, New Jersey|Harbor Terrace]]<br />[[John J Delaney Homes, New Jersey|John J Delaney Homes]]<br />[[Maurer, New Jersey|Maurer]]<br />[[William Dunlap Homes, New Jersey|William Dunlap Homes]]
|-
|[[Piscataway, New Jersey|Piscataway]] || 16 || Township || 60,804 || 17,777 || 19.03 || 0.19 || 18.83 || 2,975.5 || 943.8 
|[[Piscataway Township Schools|Piscataway Township]]|| [[Fieldville, New Jersey|Fieldville]]<br />[[New Market, Middlesex County, New Jersey|New Market]]<br />[[Newtown, New Jersey|Newtown]]<br />[[North Stelton, New Jersey|North Stelton]]<br />[[Possumtown, New Jersey|Possumtown]]<br />[[Randolphville, New Jersey|Randolphville]]<br />[[Raritan Landing, New Jersey|Raritan Landing]]<br />[[Riverview Manor, New Jersey|Riverview Manor]]<br>[[Busch Campus of Rutgers University|Rutgers University-Busch Campus]] CDP (4,586)<br>[[Livingston Campus (Rutgers University)|Rutgers University-Livingston Campus]] CDP (part; 3,545)<br />[[Society Hill, Middlesex County, New Jersey|Society Hill]] CDP (3,829)
|-
|[[Plainsboro Township, New Jersey|Plainsboro]] || 25 || Township || 24,084 || 10,089 || 12.21 || 0.42 || 11.78 || 1,951.6 || 856.1 
|[[West Windsor-Plainsboro Regional School District|West Windsor-Plainsboro]]||
[[Plainsboro Center, New Jersey|Plainsboro Center]] CDP (2,760)<br />[[Princeton Meadows, New Jersey|Princeton Meadows]] CDP (14,776)<br />[[Schalks, New Jersey|Schalks]]<br />[[Scotts Corner, New Jersey|Scotts Corner]]
|-
|[[Sayreville, New Jersey|Sayreville]] || 4 || Borough || 45,345 || 16,393 || 18.70 || 2.86 || 15.84 || 2,695.7 || 1,034.8 
|[[Sayreville Public Schools|Sayreville]]|| [[Crossmans, New Jersey|Crossmans]]<br />[[Ernston, New Jersey|Ernston]]<br />[[Gillespie, New Jersey|Gillespie]]<br />[[Laurel Park, New Jersey|Laurel Park]]<br />[[MacArthur Manor, New Jersey|MacArthur Manor]]<br />[[Melrose, New Jersey|Melrose]]<br />[[Morgan, New Jersey|Morgan]]<br />[[Morgan Heights, New Jersey|Morgan Heights]]<br />[[Parlin, New Jersey|Parlin]]<br />[[Phoenix, Sayreville, New Jersey|Phoenix]]<br />[[Runyon, New Jersey|Runyon]]<br />[[Sayre Woods, New Jersey|Sayre Woods]]<br />[[Sayreville Junction, New Jersey|Sayreville Junction]]<br />[[Sayreville Station, New Jersey|Sayreville Station]]
|-
|[[South Amboy, New Jersey|South Amboy]] || 3 || City || 9,411 || 3,576 || 2.69 || 1.15 || 1.55 || 5,577.1 || 2,310.7 
|[[South Amboy Public Schools|South Amboy]]|| [[Mechanicsville, Middlesex County, New Jersey|Mechanicsville]]<br />[[Thomas J Dohany Homes, New Jersey|Thomas J Dohany Homes]]
|-
|[[South Brunswick, New Jersey|South Brunswick]] || 22 || Township || 47,043 || 15,708 || 41.04 || 0.39 || 40.65 || 1,068.1 || 386.4 
|[[South Brunswick Public Schools|South Brunswick]]|| [[Cottageville, New Jersey|Cottageville]]<br />[[Dayton, New Jersey|Dayton]] CDP (8,138)<br />[[Deans, New Jersey|Deans]] CDP (1,615)<br />[[Franklin Park, Middlesex County, New Jersey|Franklin Park]]<br />[[Fresh Ponds, New Jersey|Fresh Ponds]]<br />[[Heathcote, New Jersey|Heathcote]] CDP (7,154)<br />[[Kendall Park, New Jersey|Kendall Park]] CDP (9,989)<br />[[Kingston, New Jersey|Kingston]] CDP (1,222)<br />[[Little Rocky Hill, New Jersey|Little Rocky Hill]]<br />[[Monmouth Junction, New Jersey|Monmouth Junction]] CDP (8,895)<br />[[Sand Hills, South Brunswick, New Jersey|Sand Hills]]<br />[[South Brunswick Terrace, New Jersey|South Brunswick Terrace]]
|-
|[[South Plainfield, New Jersey|South Plainfield]] || 13 || Borough || 24,338 || 8,093 || 8.36 || 0.03 || 8.33 || 2,808.5 || 971.9 
|[[South Plainfield Public Schools|South Plainfield]]|| [[Avon Park, New Jersey|Avon Park]]<br />[[Samptown, New Jersey|Samptown]]
|-
|[[South River, New Jersey|South River]] || 5 || Borough || 16,118 || 5,957 || 2.92 || 0.15 || 2.77 || 5,781.4 || 2,151.4 
|[[South River Public Schools|South River]]|| [[Newton Heights, New Jersey|Newton Heights]]
|-
|[[Spotswood, New Jersey|Spotswood]] || 6 || Borough || 8,163 || 3,242 || 2.47 || 0.20 || 2.27 || 3,642.2 || 1,430.1 
|[[Spotswood Public Schools|Spotswood]]|| [[East Spotswood, New Jersey|East Spotswood]]<br />[[Outcalt, New Jersey|Outcalt]]
|-
|[[Woodbridge Township, New Jersey|Woodbridge]] || 18 || Township || 103,639 || 36,124 || 24.51 || 1.29 || 23.21 || 4,290.0 || 1,556.2 
|[[Woodbridge Township School District|Woodbridge Township]]|| [[Avenel, New Jersey|Avenel]] CDP (16,920)<br />[[Boynton Beach, New Jersey|Boynton Beach]]<br />[[Colonia, New Jersey|Colonia]] CDP (18,609)<br />[[Edgars, New Jersey|Edgars]]<br />[[Fords, New Jersey|Fords]] CDP (12,941)<br />[[Hazelton, New Jersey|Hazelton]]<br />[[Hopelawn, New Jersey|Hopelawn]] CDP (2,603)<br />[[Iselin, New Jersey|Iselin]] CDP (20,088)<br />[[Keasbey, New Jersey|Keasbey]] CDP (3,027)<br />[[Lynn Woodoaks, New Jersey|Lynn Woodoaks]]<br />[[Menlo Park Terrace, New Jersey|Menlo Park Terrace]] CDP (2,806)<br />[[Port Reading, New Jersey|Port Reading]] CDP (3,921)<br />[[Sand Hills, Edison and Woodbridge, New Jersey|Sand Hills]]<br />[[Sewaren, New Jersey|Sewaren]] CDP (2,885)<br />[[Shore View, New Jersey|Shore View]]<br />[[Woodbridge (CDP), New Jersey|Woodbridge CDP]] (19,839)<br />[[Woodbridge Oaks, New Jersey|Woodbridge Oaks]]
|}

==Parks and recreation==
{{See also|Middlesex County Park System}}
[[File:Landscape at Thompson Park in Monroe Township.JPG|right|thumb|250px|[[Thompson Park (Middlesex County, New Jersey)|Thompson Park]] in [[Monroe Township, Middlesex County, New Jersey|Monroe Township]]]]
* Donaldson Park
* Carteret Park
* Carteret Waterfront Park
* Edison Park
* Fords Park
* Johnson Park
* Medwick Park
* Merrill Park
* Raritan Bay Waterfront Park
* Roosevelt Park
* Spring Lake Park
* [[Thompson Park (Middlesex County, New Jersey)|Thompson Park]]
* Warren Park
* Old Bridge Waterfront Walkway
* Alvin P. Williams Memorial Park
* Ambrose & Doty's Brooks Park
* Davidson's Mill Pond Park
* Ireland Brook Park
* Jamesburg Park Conservation Area
* John A. Phillips Open Space Preserve
* John A. Phillips Park
* Catherine Von Ohlen Park

==See also==
{{Portal|New Jersey}}
* [[Little India (Middlesex County, New Jersey)]]
* [[National Register of Historic Places listings in Middlesex County, New Jersey]]

==References==
{{Reflist}}

==External links==
{{Commons category|Middlesex County, New Jersey}}
* [http://www.co.middlesex.nj.us/ Middlesex County official website] Retrieved July 1, 2008.
* {{Cite AmCyc|wstitle=Middlesex (United States)|display=Middlesex: III. A central county of New Jersey |short=x}}
* Middlesex County's municipal borders, and unincorporated communities, localities & place names at https://www.state.nj.us/transportation/refdata/gis/maps/middlesex.pdf

{{Geographic location
|Centre    = Middlesex County, New Jersey
|North     = [[Union County, New Jersey|Union County]]
|Northeast = [[Staten Island|Richmond County, New York]]
|East      = 
|Southeast = [[Monmouth County, New Jersey|Monmouth County]]
|South     = 
|Southwest = [[Mercer County, New Jersey|Mercer County]]
|West      = 
|Northwest = [[Somerset County, New Jersey|Somerset County]]
}}
{{Jersey Shore region}}
{{Raritan Valley navigation}}
{{Middlesex County, New Jersey}}
{{New Jersey}}
{{Rutgers}}
{{New York metropolitan area}}
{{Authority control}}

[[Category:Middlesex County, New Jersey| ]]
[[Category:1683 establishments in New Jersey]]
[[Category:Central Jersey]]
[[Category:Counties in the New York metropolitan area]]
[[Category:Majority-minority counties in New Jersey]]
[[Category:Populated places established in 1683]]