Grundy County, Illinois

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Grundy County is located in the U.S. state of Illinois. According to the 2020 census, it has a population of 52,533.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Its county seat is Morris.<ref name="GR6">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Grundy County is part of the Chicago metropolitan area.

In 2010, the center of population of Illinois was in Grundy County, just northeast of the village of Mazon.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Illinois's state fossil, the unique and bizarre Tully Monster, was first found in Mazon Creek. Grundy County is home to Dresden Generating Station—the first privately financed nuclear power plant built in the United States—and the Morris Operation—the only de facto high-level radioactive waste storage site in the United States.

History

Grundy County was established on February 17, 1841. It was formed out of LaSalle County and named after U.S. Attorney General Felix Grundy.<ref>Template:Cite book</ref> The county was well known for its coal mines<ref>Template:Cite book</ref> and attracted miners from Pennsylvania and other regions to work its deposits. The 1883 Diamond Mine Disaster occurred in Grundy County. The disaster took the lives of 69 men and boys who were trapped underground when water broke through into the mine after days of heavy rain and the pumps could not keep up with the rising water. 22 bodies were eventually recovered, the remaining 44 were left in the mine and the mine was sealed. Today a marker stands near where it was believed the majority of victims were entombed.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

  • Grundy County at the time of its creation in 1841
    Grundy County at the time of its creation in 1841

Geography

According to the U.S. Census Bureau, the county has a total area of Template:Convert, of which Template:Convert is land and Template:Convert (2.9%) is water.<ref name="census-density"/>

Climate and weather

Template:Climate chart In recent years, average temperatures in the county seat of Morris have ranged from a low of Template:Convert in January to a high of Template:Convert in July, although a record low of Template:Convert was recorded in January 1985 and a record high of Template:Convert was recorded in June 1988. Average monthly precipitation ranged from Template:Convert in February to Template:Convert in June.<ref name="weather"/>

Major highways

Adjacent counties

Demographics

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2020 census

Grundy County, Illinois – Racial and ethnic composition
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% 1980 % 1990 % 2000 % 2010 % 2020
White alone (NH) 29,838 31,433 35,502 44,526 43,472 97.57% 97.20% 94.58% 88.94% 82.75%
Black or African American alone (NH) 41 15 67 577 833 0.13% 0.05% 0.18% 1.15% 1.59%
Native American or Alaska Native alone (NH) 35 35 81 68 48 0.11% 0.11% 0.22% 0.14% 0.09%
Asian alone (NH) 108 105 112 318 466 0.35% 0.32% 0.30% 0.64% 0.89%
Native Hawaiian or 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> 2 12 16 x x 0.01% 0.02% 0.03%
Other race alone (NH) 49 1 3 25 122 0.16% 0.00% 0.01% 0.05% 0.23%
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> 216 441 1,864 x x 0.58% 0.88% 3.55%
Hispanic or Latino (any race) 511 748 1,552 4,096 5,712 1.67% 2.31% 4.13% 8.18% 10.87%
Total 30,582 32,337 37,535 50,063 52,533 100.00% 100.00% 100.00% 100.00% 100.00%

2010 census

As of the 2010 United States census, there were 50,063 people, 18,546 households, and 13,431 families residing in the county.<ref name="census-dp1">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The population density was Template:Convert. There were 19,996 housing units at an average density of Template:Convert.<ref name="census-density">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The racial makeup of the county was 93.7% white, 1.2% black or African American, 0.7% Asian, 0.2% American Indian, 2.7% from other races, and 1.5% from two or more races. Those of Hispanic or Latino origin made up 8.2% of the population.<ref name="census-dp1"/> In terms of ancestry, 28.3% were German, 23.0% were Irish, 12.7% were Italian, 9.4% were Polish, 8.6% were English, 7.1% were Norwegian, and 3.0% were American.<ref name="census-dp2">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Of the 18,546 households, 38.6% had children under the age of 18 living with them, 57.8% were married couples living together, 9.7% had a female householder with no husband present, 27.6% were non-families, and 22.5% of all households were made up of individuals. The average household size was 2.69 and the average family size was 3.16. The median age was 36.1 years.<ref name="census-dp1"/>

The median income for a household in the county was $64,297 and the median income for a family was $75,000. Males had a median income of $58,491 versus $36,592 for females. The per capita income for the county was $27,895. About 5.2% of families and 6.9% of the population were below the poverty line, including 8.0% of those under age 18 and 6.5% of those age 65 or over.<ref name="census-dp3">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Communities

Map of Grundy County, Illinois.
Map of Grundy County, Illinois.

City

Villages

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Former Communities

Townships

Grundy County is divided into seventeen townships:

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Unincorporated communities

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Politics

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Education

K-12 school districts include:<ref name=GrundyCoSDMap2020>Template:Cite map - Text list</ref> Template:Div col

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Secondary school districts include:<ref name=GrundyCoSDMap2020/> Template:Div col

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Elementary school districts include:<ref name=GrundyCoSDMap2020/> Template:Div col

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See also

References

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