# List of members of the United States House of Representatives in the 16th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 16th United States Congress listed by seniority. For the most part, representatives are ranked by the beginning of their terms in office.
As an historical article, the districts and party affiliations listed reflect those during the 16th Congress (March 4, 1819 – March 3, 1821). Seats and party affiliations on similar lists for other Congresses will be different for certain members.
This article describes the criteria for seniority in the House of Representatives and sets out the list of members by seniority. It is prepared on the basis of the interpretation of seniority applied to the House of Representatives in the current congress. In the absence of information to the contrary, it is presumed that the twenty-first-century practice is identical to the seniority customs used during the 16th Congress.

## House seniority

Seniority in the House, for Congressmen with unbroken service, depends on the date on which the members first term began. That date is either the start of the Congress (4 March in odd numbered years, for the era up to and including the 73rd Congress starting in 1933) or the date of a special election during the Congress. Since many members start serving on the same day as others, ranking between them is based on alphabetical order by the last name of the congressman.
Congressmen, in early Congresses, were often elected after the legal start of the Congress. Such representatives are attributed with unbroken seniority, from the legal start of the congressional term, if they were the first person elected to a seat in a Congress. The date of the election is indicated in a note.
The seniority date is normally taken from the members entry in the Biographical Directory of the United States Congress, except where the date given is the legal start of the Congress and the actual election (for someone who was not the first person elected to the seat in that Congress) was later. The date of election is taken from United States Congressional Elections 1788-1997. In a few instances the latter work provides dates, for the start and end of terms, which correct those in the Biographical Directory.
The Biographical Directory normally uses the date of a special election, as the seniority date. However, mostly in early Congresses, the date of the member taking his seat can be the one given. The date of the special election is mentioned in a note to the list below, when that date is not used as the seniority date by the Biographical Directory.
Representatives who returned to the House, after having previously served, are credited with service equal to one less than the total number of terms they served. When a representative has served a prior term of less than two terms (i.e. prior term minus one equals less than one), he is ranked above all others whose service begins on the same day.

## Leadership

In this Congress the only formal leader was the Speaker of the House. A Speakership ballot was held on December 6, 1819, and Henry Clay (DR-KY) was re-elected for a fifth consecutive Congress (although he had resigned, during the 13th Congress on January 19, 1814, so his service had not been continuous). Henry Clay received 147 votes and there were 8 scattering votes.
Speaker Clay resigned before the convening of the second session on November 13, 1820. The second Speakership election, during this Congress, took place between November 13–15, 1820. John W. Taylor (DR-NY) was elected, on the twenty-second ballot. In the final ballot, Speaker Taylor received 76 votes, William Lowndes (DR-SC) had 44, Samuel Smith (DR-MD) 27 and 1 was scattering.
The title Dean of the House (sometimes known, in the nineteenth century, as Father of the House) was held by the member with the longest continuous service. It was not a formal leadership position.

## Standing committees

The House created its first standing committee, on April 13, 1789. There were nineteen standing committees, listed in the rules initially used by the 16th Congress. Two additional committees were added during the Congress. The Committee on Manufactures was created on December 8, 1819, and the Committee on Agriculture was provided for by a resolution passed on May 3, 1820.
Committees, in this period, were normally appointed for a session at a time by the Speaker. However the resolution of March 30, 1816, which created the committees on departmental expenditures and Expenditures on Public Buildings, provided for those standing committees to be appointed for the whole Congress.
This list refers to the standing committees of the House in the 16th Congress, the year of establishment as a standing committee, the number of members assigned to the committee and the dates of appointment in each session (or if appropriate for the Congress), the end of the session (if appropriate) and its chairman. Chairmen, who were re-appointed after serving in the previous Congress, are indicated by an *.
The first session was December 6, 1819 – May 15, 1820 (162 days) and the second session was November 13, 1820 – March 3, 1821 (111 days).
| No. | Committee | From | Mbrs | Appointed | Chairman |
| 1 | Accounts | 1805 | 3 | December 8, 1819 – May 15, 1820 | James S. Smith (DR-NC) |
| 1 | Accounts | 1805 | 3 | November 15, 1820 – March 3, 1821 | James S. Smith (DR-NC) |
| 2 | Agriculture | 1820 | 7 | November 15, 1820-March 3, 1821 | Thomas Forrest (F-PA) |
| 3 | Claims | 1794 | 7 | December 8, 1819 – May 15, 1820 | Lewis Williams (DR-NC) |
| 3 | Claims | 1794 | 7 | November 15, 1820 – March 3, 1821 | Lewis Williams (DR-NC) |
| 4 | Commerce | 1795 | 7 | December 8, 1819 – May 15, 1820 | *Thomas Newton, Jr. (DR-VA) |
| 4 | Commerce | 1795 | 7 | November 15, 1820 – March 3, 1821 | *Thomas Newton, Jr. (DR-VA) |
| 5 | District of Columbia | 1808 | 7 | December 8, 1819 – May 15, 1820 | Joseph Kent (DR-MD) |
| 5 | District of Columbia | 1808 | 7 | November 15, 1820 – March 3, 1821 | Joseph Kent (DR-MD) |
| 6 | Elections | 1789 | 7 | December 8, 1819 – May 15, 1820 | *John W. Taylor (DR-NY) |
| 6 | Elections | 1789 | 7 | November 15, 1820 – March 3, 1821 | David Trimble (DR-KY) |
| 7 | Expenditures in the Navy Department | 1816 | 3 | December 8, 1819-March 3, 1821 | Stevenson Archer (DR-MD) |
| 8 | Expenditures in the Post Office Department | 1816 | 3 | December 8, 1819-March 3, 1821 | Arthur Livermore (DR-NH) |
| 9 | Expenditures in the State Department | 1816 | 3 | December 8, 1819-March 3, 1821 | John Holmes (DR-MA) (a) |
| 10 | Expenditures in the Treasury Department | 1816 | 3 | December 8, 1819-March 3, 1821 | David Trimble (DR-KY) |
| 11 | Expenditures in the War Department | 1816 | 3 | December 8, 1819-March 3, 1821 | Henry Brush (DR-OH) |
| 12 | Expenditures on Public Buildings | 1816 | 3 | December 8, 1819-March 3, 1821 | Henry Meigs (DR-NY) |
| 13 | Judiciary | 1813 | 7 | December 8, 1819 – May 15, 1820 | John Sergeant (F-PA) |
| 13 | Judiciary | 1813 | 7 | November 15, 1820 – March 3, 1821 | John Sergeant (F-PA) |
| 14 | Manufactures | 1819 | 7 | December 8, 1819 – May 15, 1820 | Henry Baldwin (DR-PA) |
| 14 | Manufactures | 1819 | 7 | November 15, 1820 – March 3, 1821 | Henry Baldwin (DR-PA) |
| 15 | Pensions and Revolutionary Claims | 1813 | 7 | December 8, 1819 – May 15, 1820 | *John Rhea (DR-TN) |
| 15 | Pensions and Revolutionary Claims | 1813 | 7 | November 15, 1820 – March 3, 1821 | *John Rhea (DR-TN) |
| 16 | Post Office and Post Roads | 1808 | 7 | December 8, 1819 – May 15, 1820 | *Arthur Livermore (DR-NH) |
| 16 | Post Office and Post Roads | 1808 | 7 | November 15, 1820 – March 3, 1821 | *Arthur Livermore (DR-NH) |
| 17 | Private Land Claims | 1816 | 7 | December 8, 1819 – May 15, 1820 | John W. Campbell (DR-OH) |
| 17 | Private Land Claims | 1816 | 7 | November 15, 1820 – March 3, 1821 | John W. Campbell (DR-OH) |
| 18 | Public Expenditures | 1814 | 7 | December 8, 1819 – May 15, 1820 | Eldred Simkins (DR-SC) |
| 18 | Public Expenditures | 1814 | 7 | November 15, 1820 – March 3, 1821 | Eldred Simkins (DR-SC) |
| 19 | Public Lands | 1805 | 7 | December 8, 1819 – May 15, 1820 | Richard C. Anderson, Jr. (DR-KY) |
| 19 | Public Lands | 1805 | 7 | November 15, 1820 – March 3, 1821 | Richard C. Anderson, Jr. (DR-KY) |
| 20 | Revisal and Unfinished Business | 1795 | 3 | December 8, 1819 – May 15, 1820 | Marcus Morton (DR-MA) |
| 20 | Revisal and Unfinished Business | 1795 | 3 | November 15, 1820 – March 3, 1821 | Marcus Morton (DR-MA) |
| 21 | Ways and Means | 1802 | 7 | December 8, 1819 – May 15, 1820 | *Samuel Smith (DR-MD) |
| 21 | Ways and Means | 1802 | 7 | November 15, 1820 – March 3, 1821 | *Samuel Smith (DR-MD) |
Note:-
* (a) Resigned from the House: March 15, 1820. Harmanus Peek (DR-NY) became Chairman for the rest of the Congress.

## List of representatives by seniority

A numerical rank is assigned to each of the 185 members initially elected to the 16th Congress. Other members, who were not the first person elected to a seat but who joined the House during the Congress, are not assigned a number (except for the representative from the newly admitted state of Alabama, who is assigned the number 186). The first representative from the newly admitted state of Maine, was elected to a seat transferred from Massachusetts and is not assigned a number.
3 representatives-elect were not sworn in. 1 was unseated after an election contest (NY-1: Sage) and 2 resigned (GA-al:Forsyth;NJ-al:Condict). The list below includes the Representatives-elect (with name in italics), with the seniority they would have held if sworn in.
Party designations used in this article are DR for Democratic-Republican members and F for Federalist representatives. Designations used for service in the first three congresses are (A) for Anti-Administration members and (P) for Pro-Administration representatives.
U.S. House seniority :
| Rank | Representative | Party | District | Seniority date | Previous Service | Notes |
| 1 | Thomas Newton, Jr. | DR | VA-21 | March 4, 1801 | | Elected to this Congress: April 1819. Dean of the House. Chairman: Commerce. |
| 2 | John Randolph | DR | VA-16 | March 4, 1819 | 1799-1813 1815-1817 | Elected to this Congress: April 1819. |
| 3 | Jonathan O. Moseley | F | CT-al | March 4, 1805 | | Last term while serving in the House. |
| 4 | William A. Burwell | DR | VA-14 | December 1, 1806 | | Elected to this Congress: April 1819. Died while still serving in the House: February 16, 1821 |
| 5 | John Rhea | DR | TN-1 | March 4, 1817 | 1813-1815 | Elected to this Congress: August 5–6, 1819. Chairman: Pensions and Revolutionary Claims. |
| 6 | Henry Southard | DR | NJ-al | March 4, 1815 | 1801-1811 | Last term while serving in the House. |
| 7 | Samuel Smith | DR | MD-5 | January 31, 1816 | 1793-1803 | Chairman: Ways and Means. |
| 8 | Joseph Hiester | DR | PA-7 | March 4, 1815 | 1798-1805 | Previously served (DR) December 1, 1798 – 1805. Resigned to become Governor: December 1820. |
| 9 | William Lowndes | DR | SC-9 | March 4, 1811 | | |
| 10 | William McCoy | DR | VA-4 | March 4, 1811 | | Elected to this Congress: April 1819 |
| 11 | Hugh Nelson | DR | VA-22 | March 4, 1811 | | Elected to this Congress: April 1819 |
| 12 | James Pleasants | DR | VA-17 | March 4, 1811 | | Elected to this Congress: April 1819. Resigned to become US Senator: December 14, 1819. |
| 13 | Henry Clay | DR | KY-2 | October 30, 1815 | | Previously served (DR) 1811-January 19, 1814, and 1815. Speaker of the House (1819–20). Last term until 18th Congress. |
| 14 | Lemuel Sawyer | DR | NC-1 | March 4, 1817 | 1807-1813 | Elected to this Congress: August 13, 1819. |
| 15 | Elias Earle | DR | SC-6 | March 4, 1817 | 1806-1807, 1811-1815 | Last term while serving in the House. |
| 16 | Samuel Ringgold | DR | MD-4 | March 4, 1817 | 1810-1815 | Last term while serving in the House. |
| 17 | John Forsyth | DR | GA-al | March 4, 1813 | | Resigned as Representative-elect, to become US Senator: November 23, 1818 |
| 18 | James Johnson | DR | VA-20 | March 4, 1813 | | Elected to this Congress: April 1819. Resigned while serving in the House: February 1, 1820. |
| 19 | John W. Taylor | DR | NY-11 | March 4, 1813 | | Chairman: Elections (1819–20). Speaker of the House (1820-21). |
| 20 | Philip P. Barbour | DR | VA-11 | September 19, 1814 | | Elected to this Congress: April 1819 |
| 21 | Jeremiah Nelson | F | MA-3 | March 4, 1815 | 1805-1807 | |
| 22 | Ebenezer Sage | DR | NY-1 | March 4, 1819 | 1809-1815 | Unseated, as a Representative-elect, after an election contest: January 14, 1820. |
| 23 | John Culpepper | F | NC-7 | March 4, 1819 | 1807-Jan 1808, Feb 1808-1809, 1813-1817 | Elected to this Congress: August 13, 1819. Last term while serving in the House until 18th Congress. |
| 24 | Stevenson Archer | DR | MD-6 | March 4, 1819 | 1811-1817 | Chairman: Expenditures in the Navy Department. Last term while serving in the House. |
| 25 | Peter Little | DR | MD-5 | September 2, 1816 | 1811-1813 | Previously served (DR) 1811-13 while in the House. |
| 26 | Ephraim Bateman | DR | NJ-al | March 4, 1815 | | |
| 27 | Ballard Smith | DR | VA-7 | March 4, 1815 | | Elected to this Congress: April 1819. Last term while serving in the House. |
| 28 | Peter H. Wendover | DR | NY-2 | March 4, 1815 | | Last term while serving in the House. |
| 29 | Lewis Williams | DR | NC-13 | March 4, 1815 | | Elected to this Congress: August 13, 1819. Chairman: Claims. |
| 30 | John Sergeant | F | PA-1 | October 10, 1815 | | Chairman: Judiciary |
| 31 | James M. Wallace | DR | PA-3 | October 10, 1815 | | Last term while serving in the House. |
| 32 | Weldon N. Edwards | DR | NC-6 | February 7, 1816 | | Elected to this Congress: August 13, 1819 |
| 33 | William P. Maclay | DR | PA-9 | October 8, 1816 | | Last term while serving in the House. |
| 34 | Benjamin Adams | F | MA-11 | December 2, 1816 | | Last term while serving in the House. |
| 35 | William Hendricks | DR | IN-al | December 11, 1816 | | |
| 36 | John Tyler | DR | VA-23 | December 17, 1816 | | Elected to this Congress: April 1819. Last term while serving in the House. |
| 37 | Clifton Clagett | DR | NH-al | March 4, 1817 | 1803-1805 | Elected to this Congress: March 9, 1819. Last term while serving in the House. |
| 38 | John Condit | DR | NJ-al | March 4, 1819 | 1799-1803 | Resigned, as Representative-elect: November 4, 1819. |
| 39 | Joseph Kent | DR | MD-2 | March 4, 1819 | 1811-1815 | Chairman: District of Columbia. |
| 40 | Charles Rich | DR | VT-al | March 4, 1817 | 1813-1815 | |
| 41 | William Strong | DR | VT-al | March 4, 1819 | 1811-1815 | Last term while serving in the House. |
| 42 | Ezekiel Whitman | F | MA-15 | March 4, 1817 | 1809-1811 | |
| 43 | Newton Cannon | DR | TN-5 | March 4, 1819 | 1814-1817 | Elected to this Congress: August 5–6, 1819. |
| 44 | Joel Abbot | DR | GA-al | March 4, 1817 | | |
| 45 | Samuel C. Allen | F | MA-6 | March 4, 1817 | | |
| 46 | Richard C. Anderson, Jr. | DR | KY-8 | March 4, 1817 | | Chairman: Public Lands. Last term while serving in the House. |
| 47 | Henry Baldwin | DR | PA-14 | March 4, 1817 | | Chairman: Manufactures |
| 48 | William L. Ball | DR | VA-9 | March 4, 1817 | | Elected to this Congress: April 1819 |
| 49 | Thomas Bayly | F | MD-8 | March 4, 1817 | | |
| 50 | Philemon Beecher | F | OH-5 | March 4, 1817 | | Last term while serving in the House until 18th Congress. |
| 51 | Joseph Bloomfield | DR | NJ-al | March 4, 1817 | | Last term while serving in the House. |
| 52 | Andrew Boden | DR | PA-5 | March 4, 1817 | | Last term while serving in the House. |
| 53 | Josiah Butler | DR | NH-al | March 4, 1817 | | Elected to this Congress: March 9, 1819 |
| 54 | John W. Campbell | DR | OH-2 | March 4, 1817 | | Chairman: Private Land Claims |
| 55 | Thomas W. Cobb | DR | GA-al | March 4, 1817 | | Last term while serving in the House until 18th Congress. |
| 56 | Samuel C. Crafts | DR | VT-al | March 4, 1817 | | |
| 57 | Joel Crawford | DR | GA-al | March 4, 1817 | | Last term while serving in the House. |
| 58 | Thomas Culbreth | DR | MD-7 | March 4, 1817 | | Last term while serving in the House. |
| 59 | James Ervin | DR | SC-2 | March 4, 1817 | | Last term while serving in the House. |
| 60 | John Floyd | DR | VA-5 | March 4, 1817 | | Elected to this Congress: April 1819 |
| 61 | Walter Folger, Jr. | DR | MA-9 | March 4, 1817 | | Last term while serving in the House. |
| 62 | Timothy Fuller | DR | MA-4 | March 4, 1817 | | |
| 63 | Robert S. Garnett | DR | VA-12 | March 4, 1817 | | Elected to this Congress: April 1819 |
| 64 | Thomas H. Hall | DR | NC-3 | March 4, 1817 | | Elected to this Congress: August 13, 1819 |
| 65 | Willard Hall | DR | DE-al | March 4, 1817 | | Resigned while still serving in the House: January 22, 1821 |
| 66 | Samuel Herrick | DR | OH-4 | March 4, 1817 | | Last term while serving in the House. |
| 67 | John Holmes | DR | MA-14 | March 4, 1817 | | Chairman: Expenditures in the State Department (1819–20). Resigned while still serving in the House: March 15, 1820. |
| 68 | Francis Jones | DR | TN-3 | March 4, 1817 | | Elected to this Congress: August 5–6, 1819 |
| 69 | John Linn | DR | NJ-al | March 4, 1817 | | Died while still serving in the House: January 5, 1821 |
| 70 | Arthur Livermore | DR | NH-al | March 4, 1817 | | Elected to this Congress: March 9, 1819. Chairman: Expenditures in the Post Office Department. Chairman: Post Office and Post Roads. Last term while serving in the House until 18th Congress. |
| 71 | David Marchand | DR | PA-11 | March 4, 1817 | | Last term while serving in the House. |
| 72 | Louis McLane | F | DE-al | March 4, 1817 | | |
| 73 | Charles F. Mercer | F | VA-8 | March 4, 1817 | | Elected to this Congress: April 1819 |
| 74 | Orsamus C. Merrill | DR | VT-al | March 4, 1817 | | Unseated, after election contest: January 12, 1820 |
| 75 | Robert Moore | DR | PA-15 | March 4, 1817 | | Last term while serving in the House. |
| 76 | Marcus Morton | DR | MA-10 | March 4, 1817 | | Chairman: Revisal and Unfinished Business. Last term while serving in the House. |
| 77 | Thomas Patterson | DR | PA-12 | March 4, 1817 | | |
| 78 | James Pindall | F | VA-1 | March 4, 1817 | | Elected to this Congress: April 1819. Resigned while still serving in the House: July 26, 1820. |
| 79 | Tunstall Quarles | DR | KY-9 | March 4, 1817 | | Resigned while still serving in the House: June 15, 1820 |
| 80 | Mark Richards | DR | VT-al | March 4, 1817 | | Last term while serving in the House. |
| 81 | George Robertson | DR | KY-7 | March 4, 1817 | | |
| 82 | Zabdiel Sampson | DR | MA-8 | March 4, 1817 | | Resigned while still serving in the House: July 26, 1820 |
| 83 | Thomas Settle | DR | NC-9 | March 4, 1817 | | Elected to this Congress: August 13, 1819. Last term while serving in the House. |
| 84 | Henry Shaw | DR | MA-7 | March 4, 1817 | | Elected to this Congress: April 5, 1819. Last term while serving in the House. |
| 85 | Nathaniel Silsbee | DR | MA-2 | March 4, 1817 | | Last term while serving in the House. |
| 86 | Jesse Slocumb | F | NC-4 | March 4, 1817 | | Elected to this Congress: August 13, 1819. Died: December 20, 1820. |
| 87 | James S. Smith | DR | NC-8 | March 4, 1817 | | Elected to this Congress: August 13, 1819. Chairman: Accounts. Last term while serving in the House. |
| 88 | Alexander Smyth | DR | VA-6 | March 4, 1817 | | Elected to this Congress: April 1819 |
| 89 | Henry R. Storrs | F | NY-16 | March 4, 1817 | | Last term while serving in the House until 18th Congress. |
| 90 | George Strother | DR | VA-10 | March 4, 1817 | | Elected to this Congress: April 1819. Resigned while still serving in the House: February 10, 1820. |
| 91 | Christian Tarr | DR | PA-13 | March 4, 1817 | | Last term while serving in the House. |
| 92 | William Terrell | DR | GA-al | March 4, 1817 | | Last term while serving in the House. |
| 93 | Caleb Tompkins | DR | NY-3 | March 4, 1817 | | Last term while serving in the House. |
| 94 | David Trimble | DR | KY-1 | March 4, 1817 | | Chairman: Expenditures in the Treasury Department. Chairman: Elections (1820–21). |
| 95 | Starling Tucker | DR | SC-4 | March 4, 1817 | | |
| 96 | Nathaniel Upham | DR | NH-al | March 4, 1817 | | Elected to this Congress: March 9, 1819 |
| 97 | David Walker | DR | KY-6 | March 4, 1817 | | Died while still serving in the House: March 1, 1820 |
| 98 | Felix Walker | DR | NC-12 | March 4, 1817 | | Elected to this Congress: August 13, 1819 |
| 99 | John Murray | DR | PA-10 | October 14, 1817 | | Last term while serving in the House. |
| 100 | Jonathan Mason | F | MA-1 | November 17, 1817 | | Resigned while still serving in the House: May 15, 1820 |
| 101 | Eldred Simkins | DR | SC-5 | January 24, 1818 | | Chairman: Public Expenditures. Last term while serving in the House. |
| 102 | Thomas J. Rogers | DR | PA-6 | March 3, 1818 | | |
| 103 | Samuel Moore | DR | PA-6 | October 13, 1818 | | |
| 104 | Enoch Lincoln | DR | MA-20 | November 4, 1818 | | |
| 105 | Thomas Butler | DR | LA-al | November 16, 1818 | | Last term while serving in the House. |
| 106 | Jacob Hostetter | DR | PA-4 | November 16, 1818 | | Last term while serving in the House. |
| 107 | William Davidson | F | NC-11 | December 2, 1818 | | Last term while serving in the House. |
| 108 | Charles Fisher | DR | NC-10 | February 11, 1819 | | Elected to this Congress: August 13, 1819. Last term while serving in the House until 26th Congress. |
| ... | Robert R. Reid | DR | GA-al | February 18, 1819 | | Special election to this Congress (vice Forsyth, before term started): January 14, 1819 |
| 109 | William Darlington | DR | PA-2 | March 4, 1819 | 1815-1817 | |
| 110 | Benjamin Hardin | DR | KY-10 | March 4, 1819 | 1815-1817 | |
| 111 | Joseph Hemphill | F | PA-1 | March 4, 1819 | 1801-1803 | Previously served (F) 1801-03 while in the House. |
| 112 | Alney McLean | DR | KY-5 | March 4, 1819 | 1815-1817 | Last term while serving in the House. |
| 113 | James Parker | DR | MA-18 | March 4, 1819 | 1813-1815 | Elected to this Congress: April 5, 1819. Last term while serving in the House. |
| 114 | Charles Hooks | DR | NC-5 | March 4, 1819 | 1816-1817 | |
| 115 | Mark Alexander | DR | VA-18 | March 4, 1819 | | Elected to this Congress: April 1819 |
| 116 | Nathaniel Allen | DR | NY-21 | March 4, 1819 | | Only term while serving in the House. |
| 117 | Robert Allen | DR | TN-4 | March 4, 1819 | | Elected to this Congress: August 5–6, 1819 |
| 118 | Caleb Baker | DR | NY-20 | March 4, 1819 | | Only term while serving in the House. |
| 119 | Joseph Brevard | DR | SC-8 | March 4, 1819 | | Only term while serving in the House. |
| 120 | William Brown | DR | KY-3 | March 4, 1819 | | Only term while serving in the House. |
| 121 | Henry Brush | DR | OH-3 | March 4, 1819 | | Chairman: Expenditures in the War Department. Only term while serving in the House. |
| 122 | Henry H. Bryan | DR | TN-6 | March 4, 1819 | | Elected to this Congress: August 5–6, 1819. Only term as elected to 17th Congress but did not qualify. |
| 123 | Joseph Buffum, Jr. | DR | NH-al | March 4, 1819 | | Elected to this Congress: March 9, 1819. Only term while serving in the House. |
| 124 | Hutchins G. Burton | DR | NC-2 | March 4, 1819 | | Elected to this Congress: August 13, 1819 |
| 125 | Walter Case | DR | NY-6 | March 4, 1819 | | Only term while serving in the House. |
| 126 | Robert Clark | DR | NY-8 | March 4, 1819 | | Only term while serving in the House. |
| 127 | John Cocke | DR | TN-2 | March 4, 1819 | | Elected to this Congress: August 5–6, 1819 |
| 128 | Daniel P. Cook | DR | IL-al | March 4, 1819 | | Elected to this Congress: August 8, 1819 |
| 129 | Joshua Cushman | DR | MA-19 | March 4, 1819 | | |
| 130 | John A. Cuthbert | DR | GA-al | March 4, 1819 | | Only term while serving in the House. |
| 131 | George Denison | DR | PA-10 | March 4, 1819 | | |
| 132 | Jacob H. De Witt | DR | NY-7 | March 4, 1819 | | Only term while serving in the House. |
| 133 | John D. Dickinson | F | NY-10 | March 4, 1819 | | |
| 134 | Edward Dowse | DR | MA-13 | March 4, 1819 | | Resigned while serving in the House: 26 May 1820 |
| 135 | Samuel Eddy | DR | RI-al | March 4, 1819 | | |
| 136 | Henry W. Edwards | DR | CT-al | March 4, 1819 | | |
| 137 | Samuel Edwards | F | PA-1 | March 4, 1819 | | |
| 138 | John Fay | DR | NY-14 | March 4, 1819 | | Only term while serving in the House. |
| 139 | Samuel A. Foot | DR | CT-al | March 4, 1819 | | Only term until 18th Congress |
| 140 | William D. Ford | DR | NY-18 | March 4, 1819 | | Only term while serving in the House. |
| 141 | Thomas Forrest | F | PA-1 | March 4, 1819 | | Chairman: Agriculture. Only term while serving in the House until seated in 17th Congress. |
| 142 | David Fullerton | DR | PA-5 | March 4, 1819 | | Resigned while still serving in the House: May 15, 1820 |
| 143 | Ezra C. Gross | DR | NY-12 | March 4, 1819 | | Only term while serving in the House. |
| 144 | Samuel Gross | DR | PA-2 | March 4, 1819 | | |
| 145 | Aaron Hackley, Jr. | DR | NY-17 | March 4, 1819 | | Only term while serving in the House. |
| 146 | George Hall | DR | NY-19 | March 4, 1819 | | Only term while serving in the House. |
| 147 | Nathaniel Hazard | DR | RI-al | March 4, 1819 | | Died while serving in the House: December 17, 1820 |
| 148 | Jacob Hibshman | DR | PA-3 | March 4, 1819 | | Only term while serving in the House. |
| 149 | Mark L. Hill | DR | MA-16 | March 4, 1819 | | Elected to this Congress: July 26, 1819 |
| 150 | James Jones | DR | VA-19 | March 4, 1819 | | Elected to this Congress: April 1819 |
| 151 | Jonas Kendall | F | MA-12 | March 4, 1819 | | Only term while serving in the House. |
| 152 | Martin Kinsley | DR | MA-17 | March 4, 1819 | | Elected to this Congress: July 26, 1819. Only term while serving in the House. |
| 153 | Samuel Lathrop | F | MA-5 | March 4, 1819 | | Elected to this Congress: April 5, 1819 |
| 154 | Joseph S. Lyman | DR | NY-15 | March 4, 1819 | | Only term while serving in the House. |
| 155 | John McCreary | DR | SC-7 | March 4, 1819 | | Only term while serving in the House. |
| 156 | Ezra Meech | DR | VT-al | March 4, 1819 | | Only term until 19th Congress |
| 157 | Henry Meigs | DR | NY-2 | March 4, 1819 | | Chairman: Expenditures on Public Buildings. Only term while serving in the House. |
| 158 | Thomas Metcalfe | DR | KY-4 | March 4, 1819 | | |
| 159 | Robert Monell | DR | NY-15 | March 4, 1819 | | Only term while serving in the House until 21st Congress |
| 160 | Raphael Neale | F | MD-1 | March 4, 1819 | | |
| 161 | James Overstreet | DR | SC-3 | March 4, 1819 | | |
| 162 | Severn E. Parker | DR | VA-13 | March 4, 1819 | | Elected to this Congress: April 1819. Only term while serving in the House. |
| 163 | Harmanus Peek | DR | NY-13 | March 4, 1819 | | Chairman: Expenditures in the State Department (1820–21). Only term while serving in the House. |
| 164 | Elisha Phelps | DR | CT-al | March 4, 1819 | | Only term while serving in the House until 19th Congress. |
| 165 | Robert Philson | DR | PA-8 | March 4, 1819 | | Only term while serving in the House. |
| 166 | Charles Pinckney | DR | SC-1 | March 4, 1819 | | Only term while serving in the House. |
| 167 | Nathaniel Pitcher | DR | NY-12 | March 4, 1819 | | |
| 168 | William Plumer, Jr. | DR | NH-al | March 4, 1819 | | Elected to this Congress: March 9, 1819 |
| 169 | Christopher Rankin | DR | MS-al | March 4, 1819 | | Elected to this Congress: August 2–3, 1819 |
| 170 | Jonathan Richmond | DR | NY-20 | March 4, 1819 | | Only term while serving in the House. |
| 171 | Thomas R. Ross | DR | OH-6 | March 4, 1819 | | |
| 172 | John Russ | DR | CT-al | March 4, 1819 | | |
| 173 | John Sloane | DR | OH-1 | March 4, 1819 | | |
| 174 | Bernard Smith | DR | NJ-al | March 4, 1819 | | Only term while serving in the House. |
| 175 | James Stevens | DR | CT-al | March 4, 1819 | | Only term while serving in the House. |
| 176 | Randall S. Street | F | NY-4 | March 4, 1819 | | Only term while serving in the House. |
| 177 | James Strong | F | NY-5 | March 4, 1819 | | Only term while serving in the House until 18th Congress. |
| 178 | Gideon Tomlinson | DR | CT-al | March 4, 1819 | | |
| 179 | Albert H. Tracy | DR | NY-21 | March 4, 1819 | | |
| 180 | George Tucker | DR | VA-15 | March 4, 1819 | | Elected to this Congress: April 1819 |
| 181 | Solomon Van Rensselaer | F | NY-9 | March 4, 1819 | | |
| 182 | Thomas Van Swearingen | F | VA-2 | March 4, 1819 | | Elected to this Congress: April 1819 |
| 183 | Henry R. Warfield | F | MD-3 | March 4, 1819 | | |
| 184 | Jared Williams | DR | VA-3 | March 4, 1819 | | Elected to this Congress: April 1819 |
| 185 | Silas Wood | F | NY-1 | March 4, 1819 | | |
| Members joining the House, after the start of the Congress |||||||
| 186 | John Crowell | DR | AL-al | December 14, 1819 | | Previously Delegate January 29, 1818–19. Elected to this Congress: September 20–21, 1819. First Representative from new state. Only term while serving in the House. |
| ... | William S. Archer | DR | VA-17 | January 3, 1820 | | Special election |
| ... | Rollin C. Mallary | DR | VT-al | January 13, 1820 | | Seated after election challenge: January 13, 1820 |
| ... | James Guyon, Jr. | DR | NY-1 | January 14, 1820 | | Seated after election contest. Only term while serving in the House. |
| ... | Charles Kinsey | DR | NJ-al | February 2, 1820 | | Previously served (DR) 1817-19 while in the House. Special election: February 1–2, 1820. Last term while serving in the House. |
| ... | Thomas Montgomery | DR | KY-9 | August 1, 1820 | | Previously served (DR) 1813-15 while in the House. Special election: August 7, 1820. |
| ... | John C. Gray | DR | VA-20 | August 28, 1820 | | Special election: August 3, 7, 21, 23, 1820. Only term while serving in the House. |
| ... | William Eustis | DR | MA-13 | August 21, 1820 | | Previously served (DR) 1801–05. Special election. |
| ... | Thomas G. McCullough | F | PA-5 | October 17, 1820 | | Special election: October 10, 1820. Only term while serving in the House. |
| ... | Edward B. Jackson | DR | VA-1 | October 23, 1820 | | Special election: October 2, 9, 16, 23, 1820 |
| ... | Joseph Dane | F | ME-al | November 6, 1820 | | Seat replaced MA-14. First Representative elected from new state. Special election. |
| ... | Benjamin Gorham | DR | MA-1 | November 6, 1820 | | Special election |
| ... | Francis Johnson | DR | KY-6 | November 13, 1820 | | Special election: August 7, 1820 |
| ... | Thomas L. Moore | DR | VA-10 | November 13, 1820 | | Special election: August 21, 28, 1820 |
| ... | Aaron Hobart | DR | MA-8 | November 24, 1820 | | Special election |
| ... | Daniel Udree | DR | PA-7 | December 26, 1820 | | Previously served (DR) October 12, 1813-15 while in the House. Special election. Last term while serving in the House until seated in 17th Congress. |
| ... | William S. Blackledge | DR | NC-4 | February 7, 1821 | | Special election: January 18–19, 1821 |
| Non voting members |||||||
| a | John Scott | - | MO-al | August 4, 1817 | | Delegate from Missouri Territory. Previously served (Ind) August 6, 1816 – January 13, 1817. Last term until Representative in 17th Congress. |
| b | William Woodbridge | - | MI-al | March 4, 1819 | | Delegate from Michigan Territory. Resigned: August 9, 1820. |
| c | James W. Bates | - | AR-al | December 21, 1819 | | Delegate from Arkansas Territory |
| d | Solomon Sibley | - | MI-al | November 20, 1820 | | Delegate from Michigan Territory. Special election. |