16th United States Congress
Template:Short description Template:Infobox United States Congress The 16th United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1819, to March 4, 1821, during the third and fourth years of James Monroe's presidency. The apportionment of seats in the House of Representatives was based on the 1810 United States census. Both chambers had a Democratic-Republican majority. Template:TOClimit
Major events
- A "speech for Buncombe County, North Carolina" given by North Carolina representative Felix Walker in 1820 was credited with introducing into the language the term "bunkum".<ref name="ahd">Template:Cite web</ref>
- March 6, 1819: McCulloch v. Maryland: Supreme Court ruled that the Bank of the United States is constitutional.
- July 3, 1820: United States House of Representatives elections, 1820 began in Louisiana
- August 7, 1820: 1820 United States census conducted, eventually determining a population of 9,638,453, of which 1,538,022 were slaves.
- November 13–15, 1820: A special election for the House speakership takes 22 ballots.
- December 3, 1820: U.S. presidential election, 1820: James Monroe was re-elected, virtually unopposed.
Major legislation
- March 6, 1820: Missouri Compromise, Sess. 1, ch. 22, Template:USStat
- April 24, 1820: Land Act of 1820, Sess. 1, ch. 51, Template:USStat
Proposed but not enacted
- Tallmadge Amendment would allow Missouri into the Union as a slave state, but would also implement gradual emancipation in Missouri. The amendment passed the House of Representatives, but not the Senate. The Tallmadge Amendment led to the passage of the Missouri Compromise.
Treaties
- February 22, 1819: Adams-Onís Treaty (Transcontinental Treaty of 1819): Spain ceded Florida to the United States.
States admitted
- December 14, 1819: Alabama was admitted as the 22nd state, Template:USStat.
- March 15, 1820: Maine was admitted as the 23rd state. It was formerly the District of Maine, part of Massachusetts, Template:USStat.
Party summary
The count below identifies party affiliations at the beginning of the first session of this congress. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section.
Senate
During this congress, two Senate seats were added for each of the new states of Alabama and Maine. Template:US Congress party summary
House of Representatives
During this congress, one House seat was added for the new state of Alabama and one seat was reapportioned from Massachusetts to the new state of Maine. For the beginning of the next congress, six more seats from Massachusetts would be reapportioned to Maine. Template:USCongress Party summary
Leadership

Senate
- President: Daniel D. Tompkins (DR)
- President pro tempore: James Barbour, (DR), until December 26, 1819
- John Gaillard, (DR), elected January 25, 1820
House of Representatives
- Speaker: Henry Clay (DR), resigned October 28, 1820<ref>Template:Cite journal</ref>
- John Taylor, (DR), elected November 15, 1820, on the 22nd ballot<ref>Template:Cite journal</ref>
Members
This list is arranged by chamber, then by state. Senators are listed by class and representatives are listed by district.
Senate
Template:Main Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term ended with this Congress, requiring re-election in 1820; Class 2 meant their term began in the last Congress, requiring re-election in 1822; and Class 3 meant their term began in this Congress, requiring re-election in 1824. Template:Col-begin Template:Col-2
- Template:Party stripe2. William R. King (DR), from December 14, 1819 (newly admitted state)
- Template:Party stripe3. John W. Walker (DR), from December 14, 1819 (newly admitted state)
- Template:Party stripe2. Freeman Walker (DR), from November 6, 1819
- Template:Party stripe3. John Elliott (DR)
- Template:Party stripe1. James Noble (DR)
- Template:Party stripe3. Waller Taylor (DR)
- Template:Party stripe2. Richard M. Johnson (DR), from December 10, 1819
- Template:Party stripe3. William Logan (DR), until May 28, 1820
- Template:Party stripeIsham Talbot (DR), from October 19, 1820
- Template:Party stripe2. Henry Johnson (DR)
- Template:Party stripe3. James Brown (DR)
- Template:Party stripe1. John Holmes (DR), from June 13, 1820 (newly admitted state)
- Template:Party stripe2. John Chandler (DR), from June 14, 1820 (newly admitted state)
- Template:Party stripe1. Alexander C. Hanson (F), until April 23, 1819
- Template:Party stripeWilliam Pinkney (DR), from December 21, 1819
- Template:Party stripe3. Edward Lloyd (DR), from December 21, 1819
- Template:Party stripe1. Prentiss Mellen (F), until May 15, 1820
- Template:Party stripeElijah H. Mills (F), from June 12, 1820
- Template:Party stripe2. Harrison Gray Otis (F)
- Template:Party stripe1. Walter Leake (DR), until May 15, 1820
- Template:Party stripeDavid Holmes (DR), from August 30, 1820
- Template:Party stripe2. Thomas H. Williams (DR)
- Template:Party stripe1. James J. Wilson (DR), until January 8, 1821
- Template:Party stripeSamuel L. Southard (DR), from January 26, 1821
- Template:Party stripe2. Mahlon Dickerson (DR)
- Template:Party stripe1. Nathan Sanford (DR)
- Template:Party stripe3. Rufus King (F), from January 25, 1820
- Template:Party stripe1. William Hunter (F)
- Template:Party stripe2. James Burrill Jr. (F), until December 25, 1820
- Template:Party stripeNehemiah R. Knight (DR), from January 9, 1821
- Template:Party stripe2. William Smith (DR)
- Template:Party stripe3. John Gaillard (DR)
- Template:Party stripe1. John H. Eaton (DR)
- Template:Party stripe2. John Williams (DR)
- Template:Party stripe1. James Barbour (DR)
- Template:Party stripe2. John W. Eppes (DR), until December 4, 1819
- Template:Party stripeJames Pleasants (DR), from December 10, 1819

House of Representatives
Template:Main Template:Col-begin Template:Col-2
- Template:Party stripeTemplate:Ushr. John Crowell (DR), from December 14, 1819 (newly admitted state)
All representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Henry W. Edwards (DR)
- Template:Party stripeTemplate:Ushr. Samuel A. Foote (DR)
- Template:Party stripeTemplate:Ushr. Jonathan O. Moseley (DR)
- Template:Party stripeTemplate:Ushr. Elisha Phelps (DR)
- Template:Party stripeTemplate:Ushr. John Russ (DR)
- Template:Party stripeTemplate:Ushr. James Stevens (DR)
- Template:Party stripeTemplate:Ushr. Gideon Tomlinson (DR)
Both representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Willard Hall (DR), until January 22, 1821, vacant thereafter
- Template:Party stripeTemplate:Ushr. Louis McLane (F)
All representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Joel Abbot (DR)
- Template:Party stripeTemplate:Ushr. Thomas W. Cobb (DR)
- Template:Party stripeTemplate:Ushr. Joel Crawford (DR)
- Template:Party stripeTemplate:Ushr. John A. Cuthbert (DR)
- Template:Party stripeTemplate:Ushr. Robert R. Reid (DR)
- Template:Party stripeTemplate:Ushr. William Terrell (DR)
- Template:Party stripeTemplate:Ushr. David Trimble (DR)
- Template:Party stripeTemplate:Ushr. Henry Clay (DR)
- Template:Party stripeTemplate:Ushr. William Brown (DR)
- Template:Party stripeTemplate:Ushr. Thomas Metcalfe (DR)
- Template:Party stripeTemplate:Ushr. Alney McLean (DR)
- Template:Party stripeTemplate:Ushr. David Walker (DR), until March 1, 1820
- Template:Party stripeFrancis Johnson (DR), from November 13, 1820
- Template:Party stripeTemplate:Ushr. George Robertson (DR)
- Template:Party stripeTemplate:Ushr. Richard C. Anderson Jr. (DR)
- Template:Party stripeTemplate:Ushr. Tunstal Quarles (DR), until June 15, 1820
- Template:Party stripeThomas Montgomery (DR), from November 13, 1820
- Template:Party stripeTemplate:Ushr. Benjamin Hardin (DR)
- Template:Party stripeTemplate:Ushr. Joseph Dane (F), seated December 11, 1820 (newly admitted state)Template:Efn
The 5th district was a plural district with two representatives.
- Template:Party stripeTemplate:Ushr. Raphael Neale (F)
- Template:Party stripeTemplate:Ushr. Joseph Kent (DR)
- Template:Party stripeTemplate:Ushr. Henry R. Warfield (F)
- Template:Party stripeTemplate:Ushr. Samuel Ringgold (DR)
- Template:Party stripeTemplate:Ushr. Peter Little (DR)
- Template:Party stripeTemplate:Ushr. Samuel Smith (DR)
- Template:Party stripeTemplate:Ushr. Stevenson Archer (DR)
- Template:Party stripeTemplate:Ushr. Thomas Culbreth (DR)
- Template:Party stripeTemplate:Ushr. Thomas Bayly (F)
- Template:Party stripeTemplate:Ushr. Jonathan Mason (F), until May 15, 1820
- Template:Party stripeBenjamin Gorham (DR), from November 27, 1820
- Template:Party stripeTemplate:Ushr. Nathaniel Silsbee (DR)
- Template:Party stripeTemplate:Ushr. Jeremiah Nelson (F)
- Template:Party stripeTemplate:Ushr. Timothy Fuller (DR)
- Template:Party stripeTemplate:Ushr. Samuel Lathrop (F)
- Template:Party stripeTemplate:Ushr. Samuel C. Allen (F)
- Template:Party stripeTemplate:Ushr. Henry Shaw (DR)
- Template:Party stripeTemplate:Ushr. Zabdiel Sampson (DR), until July 26, 1820
- Template:Party stripeAaron Hobart (DR), from December 18, 1820
- Template:Party stripeTemplate:Ushr. Walter Folger Jr. (DR)
- Template:Party stripeTemplate:Ushr. Marcus Morton (DR)
- Template:Party stripeTemplate:Ushr. Benjamin Adams (F)
- Template:Party stripeTemplate:Ushr. Jonas Kendall (F)
- Template:Party stripeTemplate:Ushr. Edward Dowse (DR), until May 26, 1820
- Template:Party stripeWilliam Eustis (DR), from November 13, 1820
- Template:Party stripeTemplate:Ushr. John Holmes (DR), until March 15, 1820, vacant thereafter
- Template:Party stripeTemplate:Ushr. Ezekiel Whitman (F)
- Template:Party stripeTemplate:Ushr. Mark L. Hill (DR)
- Template:Party stripeTemplate:Ushr. Martin Kinsley (DR)
- Template:Party stripeTemplate:Ushr. James Parker (DR)
- Template:Party stripeTemplate:Ushr. Joshua Cushman (DR)
- Template:Party stripeTemplate:Ushr. Enoch Lincoln (DR)
All representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Joseph Buffum Jr. (DR)
- Template:Party stripeTemplate:Ushr. Josiah Butler (DR)
- Template:Party stripeTemplate:Ushr. Clifton Clagett (DR)
- Template:Party stripeTemplate:Ushr. Arthur Livermore (DR)
- Template:Party stripeTemplate:Ushr. William Plumer Jr. (DR)
- Template:Party stripeTemplate:Ushr. Nathaniel Upham (DR)
All representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Ephraim Bateman (DR)
- Template:Party stripeTemplate:Ushr. Joseph Bloomfield (DR)
- Template:Party stripeTemplate:Ushr. John Condit (DR), until November 4, 1819
- Template:Party stripeCharles Kinsey (DR), from February 16, 1820
- Template:Party stripeTemplate:Ushr. John Linn (DR), until January 5, 1821, vacant thereafter
- Template:Party stripeTemplate:Ushr. Bernard Smith (DR)
- Template:Party stripeTemplate:Ushr. Henry Southard (DR)
There were six plural districts, the 1st, 2nd, 12th, 15th, 20th & 21st, each had two representatives.
- Template:Party stripeTemplate:Ushr. James Guyon Jr. (DR), from January 14, 1820
- Template:Party stripeTemplate:Ushr. Silas Wood (F)
- Template:Party stripeTemplate:Ushr. Henry Meigs (DR)
- Template:Party stripeTemplate:Ushr. Peter H. Wendover (DR)
- Template:Party stripeTemplate:Ushr. Caleb Tompkins (DR)
- Template:Party stripeTemplate:Ushr. Randall S. Street (F)
- Template:Party stripeTemplate:Ushr. James Strong (F)
- Template:Party stripeTemplate:Ushr. Walter Case (DR)
- Template:Party stripeTemplate:Ushr. Jacob H. De Witt (DR)
- Template:Party stripeTemplate:Ushr. Robert Clark (DR)
- Template:Party stripeTemplate:Ushr. Solomon Van Rensselaer (F)
- Template:Party stripeTemplate:Ushr. John D. Dickinson (F)
- Template:Party stripeTemplate:Ushr. John W. Taylor (DR)
- Template:Party stripeTemplate:Ushr. Ezra C. Gross (DR)
- Template:Party stripeTemplate:Ushr. Nathaniel Pitcher (DR)
- Template:Party stripeTemplate:Ushr. Harmanus Peek (DR)
- Template:Party stripeTemplate:Ushr. John Fay (DR)
- Template:Party stripeTemplate:Ushr. Joseph S. Lyman (DR)
- Template:Party stripeTemplate:Ushr. Robert Monell (DR)
- Template:Party stripeTemplate:Ushr. Henry R. Storrs (F)
- Template:Party stripeTemplate:Ushr. Aaron Hackley Jr. (DR)
- Template:Party stripeTemplate:Ushr. William D. Ford (DR)
- Template:Party stripeTemplate:Ushr. George Hall (DR)
- Template:Party stripeTemplate:Ushr. Caleb Baker (DR)
- Template:Party stripeTemplate:Ushr. Jonathan Richmond (DR)
- Template:Party stripeTemplate:Ushr. Nathaniel Allen (DR)
- Template:Party stripeTemplate:Ushr. Albert H. Tracy (DR)
- Template:Party stripeTemplate:Ushr. Lemuel Sawyer (DR)
- Template:Party stripeTemplate:Ushr. Hutchins G. Burton (DR), from December 6, 1819
- Template:Party stripeTemplate:Ushr. Thomas H. Hall (DR)
- Template:Party stripeTemplate:Ushr. Jesse Slocumb (F), until December 20, 1820
- Template:Party stripeWilliam S. Blackledge (DR), from February 7, 1821
- Template:Party stripeTemplate:Ushr. Charles Hooks (DR)
- Template:Party stripeTemplate:Ushr. Weldon N. Edwards (DR)
- Template:Party stripeTemplate:Ushr. John Culpepper (F)
- Template:Party stripeTemplate:Ushr. James S. Smith (DR)
- Template:Party stripeTemplate:Ushr. Thomas Settle (DR)
- Template:Party stripeTemplate:Ushr. Charles Fisher (DR)
- Template:Party stripeTemplate:Ushr. William Davidson (F)
- Template:Party stripeTemplate:Ushr. Felix Walker (DR)
- Template:Party stripeTemplate:Ushr. Lewis Williams (DR)
- Template:Party stripeTemplate:Ushr. Thomas R. Ross (DR)
- Template:Party stripeTemplate:Ushr. John W. Campbell (DR)
- Template:Party stripeTemplate:Ushr. Henry Brush (DR)
- Template:Party stripeTemplate:Ushr. Samuel Herrick (DR)
- Template:Party stripeTemplate:Ushr. Philemon Beecher (F)
- Template:Party stripeTemplate:Ushr. John Sloane (DR)
There were six plural districts, the 2nd, 3rd, 5th, 6th & 10th had two representatives each, the 1st had four representatives.
- Template:Party stripeTemplate:Ushr. Samuel Edwards (F)
- Template:Party stripeTemplate:Ushr. Thomas Forrest (F)
- Template:Party stripeTemplate:Ushr. Joseph Hemphill (F)
- Template:Party stripeTemplate:Ushr. John Sergeant (F)
- Template:Party stripeTemplate:Ushr. William Darlington (DR)
- Template:Party stripeTemplate:Ushr. Samuel Gross (DR)
- Template:Party stripeTemplate:Ushr. Jacob Hibshman (DR)
- Template:Party stripeTemplate:Ushr. James M. Wallace (DR)
- Template:Party stripeTemplate:Ushr. Jacob Hostetter (DR)
- Template:Party stripeTemplate:Ushr. Andrew Boden (DR)
- Template:Party stripeTemplate:Ushr. David Fullerton (DR), until May 15, 1820
- Template:Party stripeThomas G. McCullough (F), from November 13, 1820
- Template:Party stripeTemplate:Ushr. Samuel Moore (DR)
- Template:Party stripeTemplate:Ushr. Thomas J. Rogers (DR)
- Template:Party stripeTemplate:Ushr. Joseph Hiester (DR), until December 1820
- Template:Party stripeDaniel Udree (DR), from January 8, 1821
- Template:Party stripeTemplate:Ushr. Robert Philson (DR)
- Template:Party stripeTemplate:Ushr. William P. Maclay (DR)
- Template:Party stripeTemplate:Ushr. George Denison (DR)
- Template:Party stripeTemplate:Ushr. John Murray (DR)
- Template:Party stripeTemplate:Ushr. David Marchand (DR)
- Template:Party stripeTemplate:Ushr. Thomas Patterson (DR)
- Template:Party stripeTemplate:Ushr. Christian Tarr (DR)
- Template:Party stripeTemplate:Ushr. Henry Baldwin (DR)
- Template:Party stripeTemplate:Ushr. Robert Moore (DR)
Both representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Samuel Eddy (DR)
- Template:Party stripeTemplate:Ushr. Nathaniel Hazard (DR), until December 17, 1820; vacant thereafter
- Template:Party stripeTemplate:Ushr. Charles Pinckney (DR)
- Template:Party stripeTemplate:Ushr. William Lowndes (DR)
- Template:Party stripeTemplate:Ushr. James Ervin (DR)
- Template:Party stripeTemplate:Ushr. James Overstreet (DR)
- Template:Party stripeTemplate:Ushr. Starling Tucker (DR)
- Template:Party stripeTemplate:Ushr. Eldred Simkins (DR)
- Template:Party stripeTemplate:Ushr. Elias Earle (DR)
- Template:Party stripeTemplate:Ushr. John McCreary (DR)
- Template:Party stripeTemplate:Ushr. Joseph Brevard (DR)
- Template:Party stripeTemplate:Ushr. John Rhea (DR)
- Template:Party stripeTemplate:Ushr. John Cocke (DR)
- Template:Party stripeTemplate:Ushr. Francis Jones (DR)
- Template:Party stripeTemplate:Ushr. Robert Allen (DR)
- Template:Party stripeTemplate:Ushr. Newton Cannon (DR)
- Template:Party stripeTemplate:Ushr. Henry H. Bryan (DR)
All representatives were elected statewide on a general ticket.
- Template:Party stripeTemplate:Ushr. Samuel C. Crafts (DR)
- Template:Party stripeTemplate:Ushr. Ezra Meech (DR)
- Template:Party stripeTemplate:Ushr. Orsamus C. Merrill (DR), until January 12, 1820
- Template:Party stripeRollin C. Mallary (DR), from January 13, 1820
- Template:Party stripeTemplate:Ushr. Charles Rich (DR)
- Template:Party stripeTemplate:Ushr. Mark Richards (DR)
- Template:Party stripeTemplate:Ushr. William Strong (DR)
- Template:Party stripeTemplate:Ushr. James Pindall (F), until July 26, 1820
- Template:Party stripeEdward B. Jackson (DR), from November 13, 1820
- Template:Party stripeTemplate:Ushr. Thomas Van Swearingen (F)
- Template:Party stripeTemplate:Ushr. Jared Williams (DR)
- Template:Party stripeTemplate:Ushr. William McCoy (DR)
- Template:Party stripeTemplate:Ushr. John Floyd (DR)
- Template:Party stripeTemplate:Ushr. Alexander Smyth (DR)
- Template:Party stripeTemplate:Ushr. Ballard Smith (DR)
- Template:Party stripeTemplate:Ushr. Charles F. Mercer (F)
- Template:Party stripeTemplate:Ushr. William Lee Ball (DR)
- Template:Party stripeTemplate:Ushr. George F. Strother (DR), until February 10, 1820
- Template:Party stripeThomas L. Moore (DR), from November 13, 1820
- Template:Party stripeTemplate:Ushr. Philip P. Barbour (DR)
- Template:Party stripeTemplate:Ushr. Robert S. Garnett (DR)
- Template:Party stripeTemplate:Ushr. Severn E. Parker (DR)
- Template:Party stripeTemplate:Ushr. William A. Burwell (DR), until February 16, 1821, vacant for remainder of term
- Template:Party stripeTemplate:Ushr. George Tucker (DR)
- Template:Party stripeTemplate:Ushr. John Randolph (DR)
- Template:Party stripeTemplate:Ushr. James Pleasants (DR), until December 14, 1819
- Template:Party stripeWilliam S. Archer (DR), from January 18, 1820
- Template:Party stripeTemplate:Ushr. Mark Alexander (DR)
- Template:Party stripeTemplate:Ushr. James Jones (DR)
- Template:Party stripeTemplate:Ushr. James Johnson (DR), until February 1, 1820
- Template:Party stripeJohn C. Gray (DR), from November 13, 1820
- Template:Party stripeTemplate:Ushr. Thomas Newton Jr. (DR)
- Template:Party stripeTemplate:Ushr. Hugh Nelson (DR)
- Template:Party stripeTemplate:Ushr. John Tyler (DR)
Non-voting members
- Template:Ushr: Vacant until statehood
- Template:Ushr. James W. Bates, from December 21, 1819
- Template:Ushr. William Woodbridge, until August 9, 1820
- Solomon Sibley, from November 20, 1820
- Template:Ushr. John Scott
Changes in membership
The count below reflects changes from the beginning of this Congress.
Senate
There were 5 resignations, 2 deaths, 2 vacancies before the Congress, and 4 new seats. The Democratic-Republicans had a 7-seat net gain and the Federalists had a 1-seat net loss.
Template:See also Template:Ordinal US Congress change
|-
| Georgia
(2)
| Vacant
| style="font-size:80%" | John Forsyth had resigned before the beginning of the Congress.
| Template:Party shading/Democratic-Republican | Freeman Walker (DR)
| Elected November 6, 1819
|-
| Kentucky
(2)
| Vacant
| style="font-size:80%" | John J. Crittenden had resigned before the beginning of the Congress.
| Template:Party shading/Democratic-Republican | Richard Mentor Johnson (DR)
| Elected December 10, 1819
|-
| Maryland
(3)
| Vacant
| style="font-size:80%" | Legislature did not elect until after the term began.
| Template:Party shading/Democratic-Republican | Edward Lloyd (DR)
| Elected December 14, 1819, and qualified December 21, 1819
|-
| New York
(3)
| Vacant
| style="font-size:80%" | Legislature failed to elect, held late election.
| Template:Party shading/Federalist | Rufus King (F)
| Elected January 8, 1820, and qualified January 25, 1820
|-
| Maryland
(1)
| Template:Party shading/Federalist | Alexander C. Hanson (F)
| style="font-size:80%" | Died April 23, 1819
| Template:Party shading/Democratic-Republican | William Pinkney (DR)
| Elected December 21, 1819
|-
| Virginia
(2)
| Template:Party shading/Democratic-Republican | John W. Eppes (DR)
| style="font-size:80%" | Resigned December 4, 1819
| Template:Party shading/Democratic-Republican | James Pleasants (DR)
| Elected December 10, 1819
|-
| Alabama
(2)
| rowspan=2 | New seats
| rowspan=2 style="font-size:80%" | Alabama was admitted to the Union December 14, 1819.
| Template:Party shading/Democratic-Republican | John W. Walker (DR)
| Elected December 14, 1819
|-
| Alabama
(3)
| Template:Party shading/Democratic-Republican | William R. King (DR)
| Elected December 14, 1819
|-
| Maine
(2)
| rowspan=2 | New seats
| rowspan=2 style="font-size:80%" |Maine was admitted to the Union March 15, 1820.
| Template:Party shading/Democratic-Republican | John Holmes (DR)
| Elected June 13, 1820
|-
| Maine
(1)
| Template:Party shading/Democratic-Republican | John Chandler (DR)
| Elected June 14, 1820
|-
| Massachusetts
(1)
| Template:Party shading/Federalist | Prentiss Mellen (F)
| style="font-size:80%" | Resigned May 15, 1820
| Template:Party shading/Federalist | Elijah H. Mills (F)
| Elected June 12, 1820
|-
| Mississippi
(1)
| Template:Party shading/Democratic-Republican | Walter Leake (DR)
| style="font-size:80%" | Resigned May 15, 1820, after becoming US Marshal for Mississippi
| Template:Party shading/Democratic-Republican | David Holmes (DR)
| Appointed August 30, 1820
|-
| Kentucky
(3)
| Template:Party shading/Democratic-Republican | William Logan (DR)
| style="font-size:80%" | Resigned May 28, 1820, to run for Governor of Kentucky
| Template:Party shading/Democratic-Republican | Isham Talbot (DR)
| Elected October 19, 1820
|-
| Rhode Island
(2)
| Template:Party shading/Federalist | James Burrill Jr. (F)
| style="font-size:80%" | Died December 25, 1820
| Template:Party shading/Democratic-Republican | Nehemiah R. Knight (DR)
| Elected January 9, 1821
|-
| New Jersey
(1)
| Template:Party shading/Democratic-Republican | James J. Wilson (DR)
| style="font-size:80%" | Resigned January 8, 1821
| Template:Party shading/Democratic-Republican | Samuel L. Southard (DR)
| Appointed January 26, 1821
|}
House of Representatives
Template:Main There were 13 resignations, 5 deaths, 2 contested elections, and 2 new seats. The Democratic-Republicans had a 1-seat net gain and the Federalists had no net change.
Template:Main Template:Ordinal US Congress change
|- | Template:Ushr | Vacant | style="font-size:80%" | | Template:Party shading/Democratic-Republican | Hutchins G. Burton (DR) | Seated December 6, 1819 |- | Template:Ushr | rowspan=2 | Vacant | rowspan=2 style="font-size:80%" | Seat remained vacant until statehood | rowspan=2 Template:Party shading/Democratic-Republican | John Crowell (DR) | rowspan=2 | Seated December 14, 1819 |- | Template:Ushr |- | Template:Ushr | Vacant | style="font-size:80%" | Arkansas Territory organized July 4, 1819 | James W. Bates | Seated December 21, 1819 |- | Template:Ushr | Vacant | style="font-size:80%" | Contested election. Representative-elect Ebenezer Sage never qualified. | Template:Party shading/Democratic-Republican | James Guyon Jr. (DR) | Seated January 14, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | John Condit (DR) | style="font-size:80%" | Resigned November 4, 1819 | Template:Party shading/Democratic-Republican | Charles Kinsey (DR) | Seated February 16, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | James Pleasants (DR) | style="font-size:80%" | Resigned December 14, 1819 | Template:Party shading/Democratic-Republican | William S. Archer (DR) | Seated January 18, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | Orsamus C. Merrill (DR) | style="font-size:80%" | Contested election, served until January 12, 1820 | Template:Party shading/Democratic-Republican | Rollin C. Mallary (DR) | Seated January 13, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | James Johnson (DR) | style="font-size:80%" | Resigned February 1, 1820 | Template:Party shading/Democratic-Republican | John C. Gray (DR) | Seated November 13, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | George F. Strother (DR) | style="font-size:80%" | Resigned February 10, 1820 | Template:Party shading/Democratic-Republican | Thomas L. Moore (DR) | Seated November 13, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | David Walker (DR) | style="font-size:80%" | Died March 1, 1820 | Template:Party shading/Democratic-Republican | Francis Johnson (DR) | Seated November 13, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | John Holmes (DR) | style="font-size:80%" | Resigned March 15, 1820, to become U.S. Senator from Maine. | District moved to Maine | District inactive until 1903 |- | Template:Ushr | New seat | style="font-size:80%" | Massachusetts's 14th district became Maine's at-large district | Template:Party shading/Federalist | Joseph Dane (F) | Seated November 6, 1820 |- | Template:Ushr | Template:Party shading/Federalist | Jonathan Mason (F) | style="font-size:80%" | Resigned May 15, 1820 | Template:Party shading/Democratic-Republican | Benjamin Gorham (DR) | Seated November 27, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | David Fullerton (DR) | style="font-size:80%" | Resigned May 15, 1820 | Template:Party shading/Federalist | Thomas G. McCullough (F) | rowspan= 4 | Seated November 13, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | Edward Dowse (DR) | style="font-size:80%" | Resigned May 26, 1820 | Template:Party shading/Democratic-Republican | William Eustis (DR) |- | Template:Ushr | Template:Party shading/Democratic-Republican | Tunstall Quarles (DR) | style="font-size:80%" | Resigned June 15, 1820 | Template:Party shading/Democratic-Republican | Thomas Montgomery (DR) |- | Template:Ushr | Template:Party shading/Federalist | James Pindall (F) | style="font-size:80%" | Resigned July 26, 1820 | Template:Party shading/Democratic-Republican | Edward B. Jackson (DR) |- | Template:Ushr | Template:Party shading/Democratic-Republican | Zabdiel Sampson (DR) | style="font-size:80%" | Resigned July 26, 1820 | Template:Party shading/Democratic-Republican | Aaron Hobart (DR) | Seated December 18, 1820
|- | Template:Ushr | William Woodbridge | style="font-size:80%" | Resigned August 9, 1820 | Solomon Sibley | Seated November 20, 1820 |- | Template:Ushr | Template:Party shading/Democratic-Republican | Joseph Hiester (DR) | style="font-size:80%" | Resigned sometime in December 1820 | Template:Party shading/Democratic-Republican | Daniel Udree (DR) | Seated January 8, 1821 |- | Template:Ushr | Template:Party shading/Democratic-Republican | Nathaniel Hazard (DR) | style="font-size:80%" | Died December 17, 1820 | Vacant | Not filled in this Congress |- | Template:Ushr | Template:Party shading/Federalist | Jesse Slocumb (F) | style="font-size:80%" | Died December 20, 1820 | Template:Party shading/Democratic-Republican | William S. Blackledge (DR) | Seated February 7, 1821 |- | Template:Ushr | Template:Party shading/Democratic-Republican | John Linn (DR) | style="font-size:80%" | Died January 5, 1821 | Vacant | Not filled in this Congress |- | Template:Ushr | Template:Party shading/Democratic-Republican | Willard Hall (DR) | style="font-size:80%" | Resigned January 22, 1821 | Vacant | Not filled in this Congress |- | Template:Ushr | Template:Party shading/Democratic-Republican | William A. Burwell (DR) | style="font-size:80%" | Died February 16, 1821 | Vacant | Not filled in this Congress |}
Committees
Lists of committees and their party leaders.
Senate
- Amendments to the Constitution (Select)
- American Colonization Society (Select)
- Audit and Control the Contingent Expenses of the Senate (Chairman: Jonathan Roberts)
- Claims (Chairman: Jonathan Roberts then James J. Wilson)
- Commerce and Manufactures (Chairman: Nathan Sanford then Mahlon Dickerson)
- Constitution of the State of Alabama (Select)
- District of Columbia (Chairman: Outerbridge Horsey)
- Engrossed Bills (Chairman: Prentiss Mellen)
- Finance (Chairman: Nathan Sanford)
- Foreign Relations (Chairman: James Brown then James Barbour)
- Indian Affairs (Chairman: David Holmes)
- Judiciary (Chairman: William Smith)
- Land Commissioner Reports (Select)
- Military Affairs (Chairman: John Williams)
- Militia (Chairman: James Noble)
- Missouri's Admission to the Union (Select)
- Naval Affairs (Chairman: James Pleasants)
- Pensions (Chairman: Nicholas Van Dyke then James Noble)
- Post Office and Post Roads (Chairman: Montfort Stokes)
- Public Buildings (Select)
- Public Lands (Chairman: Thomas Hill Williams then Jesse B. Thomas)
- Purchase of Fire Engines (Select)
- Reduction of Congressional Salaries (Select)
- Roads and Canals (Select) (Chairman: Rufus King)
- Whole
House of Representatives
- Accounts (Chairman: James S. Smith)
- Agriculture (Chairman: Thomas Forrest)
- Apportionment of Representatives (Select)
- Army Appropriations Inquiry (Select)
- Bank of the United States (Select)
- Brownstown Treaty (Select)
- Claims (Chairman: Lewis Williams)
- Commerce (Chairman: Thomas Newton Jr.)
- District of Columbia (Chairman: Joseph Kent)
- Elections (Chairman: John W. Taylor then David Trimble)
- Expenditures in the Navy Department (Chairman: Stevenson Archer)
- Expenditures in the Post Office Department (Chairman: Arthur Livermore)
- Expenditures in the State Department (Chairman: John Holmes)
- Expenditures in the Treasury Department (Chairman: David Trimble)
- Expenditures in the War Department (Chairman: Henry Brush)
- Expenditures on Public Buildings (Chairman: Henry Meigs)
- Judiciary (Chairman: John Sergeant)
- Manufactures (Chairman: Henry Baldwin)
- Pensions and Revolutionary Claims (Chairman: John Rhea)
- Post Office and Post Roads (Chairman: Arthur Livermore)
- Private Land Claims (Chairman: John W. Campbell)
- Public Expenditures (Chairman: Eldred Simkins)
- Public Lands (Chairman: Richard C. Anderson Jr.)
- Revisal and Unfinished Business (Chairman: Marcus Morton)
- Rules (Select)
- Standards of Official Conduct
- Ways and Means (Chairman: Samuel Smith)
- Whole
Joint committees
Officers
Legislative branch agency directors
Senate
- Chaplain: John Clark (Presbyterian), until December 9, 1819
- Reuben Post (Presbyterian), elected December 9, 1819
- William Ryland (Methodist), elected November 17, 1820
- Secretary: Charles Cutts
- Sergeant at Arms: Mountjoy Bayly
House of Representatives
- Chaplain: Burgiss Allison (Baptist), until November 16, 1820
- John N. Campbell (Presbyterian), elected November 16, 1820
- Clerk: Thomas Dougherty
- Doorkeeper: Thomas Claxton
- Reading Clerks: Template:Data missing
- Sergeant at Arms: Thomas Dunn
See also
- 1818 United States elections (elections leading to this Congress)
- 1820 United States elections (elections during this Congress, leading to the next Congress)