This is a complete list of United States representatives during the 31st United States Congress listed by seniority.
As an historical article, the districts and party affiliations listed reflect those during the 31st Congress (March 4, 1849 – March 3, 1851). Seats and party affiliations on similar lists for other congresses will be different for certain members. [1]
Seniority depends on the date on which members were sworn into office. Since many members are sworn in on the same day, subsequent ranking is based on previous congressional service of the individual and then by alphabetical order by the last name of the representative.
Committee chairmanship in the House is often associated with seniority. However, party leadership is typically not associated with seniority.
Note: The "*" indicates that the representative/delegate may have served one or more non-consecutive terms while in the House of Representatives of the United States Congress.
| Rank | Representative | Party | District | Seniority date (Previous service, if any) | No.# of term(s) | Notes |
|---|---|---|---|---|---|---|
| 1 | Linn Boyd | D | KY-01 | March 4, 1839 Previous service, 1835–1837. | 7th term* | Dean of the House |
| 2 | Isaac E. Holmes | D | SC-06 | March 4, 1839 | 6th term | Left the House in 1851. |
| 3 | Jacob Thompson | D | MS-01 | March 4, 1839 | 6th term | Left the House in 1851. |
| 4 | John Reeves Jones Daniel | D | NC-06 | March 4, 1841 | 5th term | |
| 5 | Robert C. Winthrop | W | MA-01 | November 29, 1842 Previous service, 1840–1842. | 7th term* | Resigned on July 30, 1850. |
| 6 | Joshua R. Giddings | W | OH-20 | December 5, 1842 Previous service, 1838–1842. | 8th term* | |
| 7 | James B. Bowlin | D | MO-01 | March 4, 1843 | 4th term | Left the House in 1851. |
| 8 | Armistead Burt | D | SC-05 | March 4, 1843 | 4th term | |
| 9 | Howell Cobb | D | GA-06 | March 4, 1843 | 4th term | Speaker of the House Left the House in 1851. |
| 10 | Andrew Johnson | D | TN-01 | March 4, 1843 | 4th term | |
| 11 | George W. Jones | D | TN-05 | March 4, 1843 | 4th term | |
| 12 | Hugh A. Haralson | D | GA-04 | March 4, 1843 | 4th term | Left the House in 1851. |
| 13 | Daniel P. King | W | MA-02 | March 4, 1843 | 4th term | Died on July 25, 1850. |
| 14 | George P. Marsh | W | VT-03 | March 4, 1843 | 4th term | Resigned sometime in 1849. |
| 15 | John A. McClernand | D | IL-02 | March 4, 1843 | 4th term | Left the House in 1851. |
| 16 | Julius Rockwell | W | MA-07 | March 4, 1843 | 4th term | Left the House in 1851. |
| 17 | Robert C. Schenck | W | OH-03 | March 4, 1843 | 4th term | Left the House in 1851. |
| 18 | Samuel Finley Vinton | W | OH-12 | March 4, 1843 Previous service, 1823–1837. | 11th term* | Left the House in 1851. |
| 19 | John Wentworth | D | IL-04 | March 4, 1843 | 4th term | Left the House in 1851. |
| 20 | Joseph A. Woodward | D | SC-03 | March 4, 1843 | 4th term | |
| 21 | Alexander H. Stephens | W | GA-07 | October 2, 1843 | 4th term | |
| 22 | Joseph Grinnell | W | MA-10 | December 7, 1843 | 4th term | Left the House in 1851. |
| 23 | Thomas H. Bayly | D | VA-07 | May 6, 1844 | 4th term | |
| 24 | Isaac E. Morse | D | LA-04 | December 2, 1844 | 4th term | Left the House in 1851. |
| 25 | George Ashmun | W | MA-06 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 26 | Meredith P. Gentry | W | TN-07 | March 4, 1845 Previous service, 1839–1843. | 5th term* | |
| 27 | Henry W. Hilliard | W | AL-02 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 28 | John W. Houston | W | DE | March 4, 1845 | 3rd term | Left the House in 1851. |
| 29 | Thomas B. King | W | GA-01 | March 4, 1845 Previous service, 1839–1843. | 5th term* | Resigned on March 3, 1850. |
| 30 | Lewis C. Levin | W | PA-01 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 31 | John S. Phelps | D | MO-05 | March 4, 1845 | 3rd term | |
| 32 | Joseph M. Root | W | OH-21 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 33 | Frederick P. Stanton | D | TN-10 | March 4, 1845 | 3rd term | |
| 34 | James Thompson | D | PA-23 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 35 | Robert Toombs | W | GA-08 | March 4, 1845 | 3rd term | |
| 36 | Hugh White | W | NY-16 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 37 | David Wilmot | D | PA-12 | March 4, 1845 | 3rd term | Left the House in 1851. |
| 38 | John H. Harmanson | D | LA-03 | December 1, 1845 | 3rd term | Died on October 24, 1850. |
| 39 | Emile La Sére | D | LA-01 | January 29, 1846 | 3rd term | Left the House in 1851. |
| 40 | James McDowell | D | VA-11 | March 6, 1846 | 3rd term | Left the House in 1851. |
| 41 | David S. Kaufman | D | TX-01 | March 30, 1846 | 3rd term | Died on January 31, 1851. |
| 42 | Franklin Welsh Bowdon | D | AL-07 | December 7, 1846 | 3rd term | Left the House in 1851. |
| 43 | Shepherd Leffler | D | IA-02 | December 29, 1846 | 3rd term | Left the House in 1851. |
| 44 | Kinsley S. Bingham | D | MI-03 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 45 | Albert G. Brown | D | MS-04 | March 4, 1847 Previous service, 1839–1841. | 3rd term* | |
| 46 | Thomas S. Bocock | D | VA-04 | March 4, 1847 | 2nd term | |
| 47 | Chester Pierce Butler | W | PA-11 | March 4, 1847 | 2nd term | Died on October 5, 1850. |
| 48 | Edward C. Cabell | W | FL | March 4, 1847 Previous service, 1845–1846. | 3rd term* | |
| 49 | Thomas L. Clingman | W | NC-01 | March 4, 1847 Previous service, 1843–1845. | 3rd term* | |
| 50 | Williamson R. W. Cobb | D | AL-06 | March 4, 1847 | 2nd term | |
| 51 | Harmon S. Conger | W | NY-25 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 52 | John Crowell | W | OH-19 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 53 | Rodolphus Dickinson | D | OH-06 | March 4, 1847 | 2nd term | Died on March 20, 1849. |
| 54 | William Duer | W | NY-23 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 55 | Alexander Evans | W | MD-05 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 56 | Nathan Evans | W | OH-14 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 57 | Winfield S. Featherston | D | MS-02 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 58 | John Freedley | W | PA-05 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 59 | James S. Green | D | MO-03 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 60 | Daniel Gott | W | NY-24 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 61 | Willard Preble Hall | D | MO-04 | March 4, 1847 | 2nd term | |
| 62 | Moses Hampton | W | PA-21 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 63 | Sampson W. Harris | D | AL-03 | March 4, 1847 | 2nd term | |
| 64 | William Henry | W | VT-01 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 65 | Samuel W. Inge | D | AL-04 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 66 | Robert W. Johnson | D | AR | March 4, 1847 | 2nd term | |
| 67 | Job Mann | D | PA-19 | March 4, 1847 Previous service, 1835–1837. | 3rd term* | Left the House in 1851. |
| 68 | Robert M. McLane | D | MD-04 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 69 | John K. Miller | D | OH-11 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 70 | Charles S. Morehead | W | KY-08 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 71 | Jonathan D. Morris | D | OH-07 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 72 | William Nelson | W | NY-07 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 73 | Henry Nes | W | PA-15 | March 4, 1847 Previous service, 1843–1845. | 3rd term* | Died on September 10, 1850. |
| 74 | William A. Newell | W | NJ-02 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 75 | David Outlaw | W | NC-09 | March 4, 1847 | 2nd term | |
| 76 | Charles H. Peaslee | D | NH-02 | March 4, 1847 | 2nd term | |
| 77 | Lucius B. Peck | D | VT-04 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 78 | Harvey Putnam | W | NY-33 | March 4, 1847 Previous service, 1838–1839. | 3rd term* | Left the House in 1851. |
| 79 | Gideon Reynolds | W | NY-12 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 80 | John L. Robinson | D | IN-03 | March 4, 1847 | 2nd term | |
| 81 | Robert L. Rose | W | NY-29 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 82 | David Rumsey | W | NY-30 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 83 | Augustine Henry Shepperd | W | NC-04 | March 4, 1847 Previous service, 1827–1839 and 1841–1843. | 9th term** | Left the House in 1851. |
| 84 | Peter H. Silvester | W | NY-11 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 85 | William Strong | D | PA-09 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 86 | John L. Taylor | W | OH-08 | March 4, 1847 | 2nd term | |
| 87 | James Houston Thomas | D | TN-06 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 88 | John B. Thompson | W | KY-05 | March 4, 1847 Previous service, 1840–1843. | 4th term* | Left the House in 1851. |
| 89 | William Thompson | D | IA-01 | March 4, 1847 | 2nd term | Resigned on June 29, 1850. |
| 90 | Amos Tuck | D | NH-01 | March 4, 1847 | 2nd term | |
| 91 | Abraham W. Venable | D | NC-05 | March 4, 1847 | 2nd term | |
| 92 | John Van Dyke | W | NJ-04 | March 4, 1847 | 2nd term | Left the House in 1851. |
| 93 | James Wilson II | W | NH-03 | March 4, 1847 | 2nd term | Resigned on September 9, 1850. |
| 94 | Richard K. Meade | D | VA-02 | August 5, 1847 | 2nd term | |
| 95 | William A. Richardson | D | IL-05 | December 6, 1847 | 2nd term | |
| 96 | Horace Mann | W | MA-08 | April 3, 1848 | 2nd term | |
| 97 | Daniel Wallace | D | SC-01 | June 12, 1848 | 2nd term | |
| 98 | John McQueen | D | SC-04 | February 12, 1849 | 2nd term | |
| 99 | Nathaniel Albertson | D | IN-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 100 | Henry P. Alexander | W | NY-17 | March 4, 1849 | 1st term | Left the House in 1851. |
| 101 | Charles Allen | W | MA-05 | March 4, 1849 | 1st term | |
| 102 | William J. Alston | W | AL-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 103 | Josiah M. Anderson | W | TN-03 | March 4, 1849 | 1st term | Left the House in 1851. |
| 104 | George R. Andrews | W | NY-14 | March 4, 1849 | 1st term | Left the House in 1851. |
| 105 | William S. Ashe | D | NC-07 | March 4, 1849 | 1st term | |
| 106 | Thomas H. Averett | D | VA-03 | March 4, 1849 | 1st term | |
| 107 | Edward D. Baker | W | IL-06 | March 4, 1849 Previous service, 1845–1847. | 2nd term* | Left the House in 1851. |
| 108 | William Van Ness Bay | D | MO-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 109 | James M. H. Beale | D | VA-14 | March 4, 1849 Previous service, 1833–1837. | 3rd term* | |
| 110 | Henry Bennett | W | NY-22 | March 4, 1849 | 1st term | |
| 111 | William H. Bissell | D | IL-01 | March 4, 1849 | 1st term | |
| 112 | David A. Bokee | W | NY-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 113 | Walter Booth | D | CT-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 114 | Richard Bowie | W | MD-01 | March 4, 1849 | 1st term | |
| 115 | Daniel Breck | W | KY-06 | March 4, 1849 | 1st term | Left the House in 1851. |
| 116 | George Briggs | W | NY-05 | March 4, 1849 | 1st term | |
| 117 | James Brooks | W | NY-06 | March 4, 1849 | 1st term | |
| 118 | Alexander W. Buel | D | MI-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 119 | Lorenzo Burrows | W | NY-34 | March 4, 1849 | 1st term | |
| 120 | Thomas B. Butler | W | CT-04 | March 4, 1849 | 1st term | Left the House in 1851. |
| 121 | William J. Brown | D | IN-05 | March 4, 1849 Previous service, 1843–1845. | 2nd term* | Left the House in 1851. |
| 122 | Joseph Cable | D | OH-17 | March 4, 1849 | 1st term | |
| 123 | George Caldwell | D | KY-04 | March 4, 1849 Previous service, 1843–1845. | 2nd term* | Left the House in 1851. |
| 124 | Joseph P. Caldwell | W | NC-02 | March 4, 1849 | 1st term | |
| 125 | Samuel Calvin | W | PA-17 | March 4, 1849 | 1st term | Left the House in 1851. |
| 126 | Lewis D. Campbell | W | OH-02 | March 4, 1849 | 1st term | |
| 127 | David K. Cartter | D | OH-18 | March 4, 1849 | 1st term | |
| 128 | Joseph Casey | W | PA-13 | March 4, 1849 | 1st term | Left the House in 1851. |
| 129 | Joseph R. Chandler | W | PA-02 | March 4, 1849 | 1st term | |
| 130 | Charles E. Clarke | W | NY-19 | March 4, 1849 | 1st term | Left the House in 1851. |
| 131 | Chauncey F. Cleveland | D | CT-03 | March 4, 1849 | 1st term | |
| 132 | William F. Colcock | D | SC-07 | March 4, 1849 | 1st term | |
| 133 | Orasmus Cole | W | WI-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 134 | Charles M. Conrad | W | LA-02 | March 4, 1849 | 1st term | Resigned on August 17, 1850. |
| 135 | Moses Bledso Corwin | W | OH-04 | March 4, 1849 | 1st term | Left the House in 1851. |
| 136 | Edmund Deberry | W | NC-03 | March 4, 1849 Previous service, 1829–1831 and 1833–1845. | 8th term** | Left the House in 1851. |
| 137 | Jesse C. Dickey | W | PA-07 | March 4, 1849 | 1st term | Left the House in 1851. |
| 138 | Milo M. Dimmick | W | PA-10 | March 4, 1849 | 1st term | |
| 139 | David T. Disney | D | OH-01 | March 4, 1849 | 1st term | |
| 140 | Nathan F. Dixon II | W | RI-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 141 | James D. Doty | D | WI-03 | March 4, 1849 Previous service, 1839–1841. | 3rd term* | |
| 142 | James H. Duncan | W | MA-03 | March 4, 1849 | 1st term | |
| 143 | Cyrus L. Dunham | D | IN-02 | March 4, 1849 | 1st term | |
| 144 | Charles Durkee | D | WI-01 | March 4, 1849 | 1st term | |
| 145 | Henry A. Edmundson | D | VA-12 | March 4, 1849 | 1st term | |
| 146 | Andrew Ewing | D | TN-08 | March 4, 1849 | 1st term | Left the House in 1851. |
| 147 | Graham N. Fitch | D | IN-09 | March 4, 1849 | 1st term | |
| 148 | Orin Fowler | W | MA-09 | March 4, 1849 | 1st term | |
| 149 | Thomas J. D. Fuller | D | ME-07 | March 4, 1849 | 1st term | |
| 150 | Elbridge Gerry | D | ME-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 151 | Alfred Gilmore | D | PA-24 | March 4, 1849 | 1st term | |
| 152 | Rufus K. Goodenow | W | ME-04 | March 4, 1849 | 1st term | Left the House in 1851. |
| 153 | Herman D. Gould | W | NY-10 | March 4, 1849 | 1st term | Left the House in 1851. |
| 154 | Willis A. Gorman | D | IN-06 | March 4, 1849 | 1st term | |
| 155 | Thomas C. Hackett | D | GA-05 | March 4, 1849 | 1st term | Left the House in 1851. |
| 156 | Ransom Halloway | W | NY-08 | March 4, 1849 | 1st term | Left the House in 1851. |
| 157 | William T. Hamilton | D | MD-02 | March 4, 1849 | 1st term | |
| 158 | Edward Hammond | D | MD-03 | March 4, 1849 | 1st term | |
| 159 | Andrew J. Harlan | D | IN-10 | March 4, 1849 | 1st term | Left the House in 1851. |
| 160 | Isham G. Harris | D | TN-09 | March 4, 1849 | 1st term | |
| 161 | Thomas L. Harris | D | IL-07 | March 4, 1849 | 1st term | Left the House in 1851. |
| 162 | Andrew K. Hay | W | NJ-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 163 | William Hebard | W | VT-02 | March 4, 1849 | 1st term | |
| 164 | David Hubbard | D | AL-05 | March 4, 1849 Previous service, 1839–1841. | 2nd term* | Left the House in 1851. |
| 165 | Harry Hibbard | D | NH-04 | March 4, 1849 | 1st term | |
| 166 | Moses Hoagland | D | OH-16 | March 4, 1849 | 1st term | Left the House in 1851. |
| 167 | Alexander Holladay | D | VA-08 | March 4, 1849 | 1st term | |
| 168 | Volney Howard | D | TX-02 | March 4, 1849 | 1st term | |
| 169 | John W. Howe | W | PA-22 | March 4, 1849 | 1st term | |
| 170 | William F. Hunter | W | OH-15 | March 4, 1849 | 1st term | |
| 171 | William T. Jackson | W | NY-26 | March 4, 1849 | 1st term | Left the House in 1851. |
| 172 | James L. Johnson | W | KY-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 173 | George W. Julian | D | IN-04 | March 4, 1849 | 1st term | Left the House in 1851. |
| 174 | John B. Kerr | W | MD-06 | March 4, 1849 | 1st term | Left the House in 1851. |
| 175 | George G. King | W | RI-01 | March 4, 1849 | 1st term | |
| 176 | James G. King | W | NJ-05 | March 4, 1849 | 1st term | Left the House in 1851. |
| 177 | John A. King | W | NY-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 178 | Preston King | W | NY-18 | March 4, 1849 Previous service, 1843–1847. | 3rd term* | |
| 179 | Nathaniel Littlefield | D | ME-02 | March 4, 1849 Previous service, 1841–1843. | 2nd term* | Left the House in 1851. |
| 180 | Humphrey Marshall | W | KY-07 | March 4, 1849 | 1st term | |
| 181 | John C. Mason | D | KY-09 | March 4, 1849 | 1st term | |
| 182 | Orsamus B. Matteson | W | NY-20 | March 4, 1849 | 1st term | Left the House in 1851. |
| 183 | Joseph E. McDonald | D | IN-08 | March 4, 1849 | 1st term | Left the House in 1851. |
| 184 | Edward W. McGaughey | W | IN-07 | March 4, 1849 Previous service, 1845–1847. | 2nd term* | Left the House in 1851. |
| 185 | Thomas McKissock | W | NY-09 | March 4, 1849 | 1st term | Left the House in 1851. |
| 186 | James Xavier McLanahan | D | PA-16 | March 4, 1849 | 1st term | |
| 187 | Finis McLean | W | KY-03 | March 4, 1849 | 1st term | Left the House in 1851. |
| 188 | Fayette McMullen | D | VA-13 | March 4, 1849 | 1st term | |
| 189 | John Millson | D | VA-01 | March 4, 1849 | 1st term | |
| 190 | Henry D. Moore | W | PA-03 | March 4, 1849 | 1st term | |
| 191 | Jeremiah Morton | W | VA-09 | March 4, 1849 | 1st term | Left the House in 1851. |
| 192 | Alexander Newman | D | VA-15 | March 4, 1849 | 1st term | Died on September 8, 1849. |
| 193 | Andrew J. Ogle | W | PA-18 | March 4, 1849 | 1st term | Left the House in 1851. |
| 194 | Edson B. Olds | D | OH-09 | March 4, 1849 | 1st term | |
| 195 | James L. Orr | D | SC-02 | March 4, 1849 | 1st term | |
| 196 | John Otis | W | ME-03 | March 4, 1849 | 1st term | Left the House in 1851. |
| 197 | Allen F. Owen | W | GA-03 | March 4, 1849 | 1st term | Left the House in 1851. |
| 198 | Richard Parker | D | VA-10 | March 4, 1849 | 1st term | Left the House in 1851. |
| 199 | Jonas P. Phoenix | W | NY-03 | March 4, 1849 Previous service, 1843–1845. | 2nd term* | Left the House in 1851. |
| 200 | Charles W. Pitman | W | PA-14 | March 4, 1849 | 1st term | Left the House in 1851. |
| 201 | Emery D. Potter | D | OH-05 | March 4, 1849 Previous service, 1843–1845. | 2nd term* | Left the House in 1851. |
| 202 | Paulus Powell | D | VA-05 | March 4, 1849 | 1st term | |
| 203 | Robert R. Reed | W | PA-20 | March 4, 1849 | 1st term | Left the House in 1851. |
| 204 | Elijah Risley | W | NY-31 | March 4, 1849 | 1st term | Left the House in 1851. |
| 205 | John Robbins | D | PA-04 | March 4, 1849 | 1st term | |
| 206 | Thomas Ross | D | PA-06 | March 4, 1849 | 1st term | |
| 207 | William A. Sackett | W | NY-27 | March 4, 1849 | 1st term | |
| 208 | John H. Savage | D | TN-04 | March 4, 1849 | 1st term | |
| 209 | Cullen Sawtelle | D | ME-05 | March 4, 1849 Previous service, 1845–1847. | 2nd term* | Left the House in 1851. |
| 210 | Abraham M. Schermerhorn | W | NY-28 | March 4, 1849 | 1st term | |
| 211 | John L. Schoolcraft | W | NY-13 | March 4, 1849 | 1st term | |
| 212 | James Seddon | D | VA-06 | March 4, 1849 Previous service, 1845–1847. | 2nd term* | Left the House in 1851. |
| 213 | Elbridge G. Spaulding | W | NY-32 | March 4, 1849 | 1st term | Left the House in 1851. |
| 214 | William Sprague | W | MI-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 215 | Richard H. Stanton | D | KY-10 | March 4, 1849 | 1st term | |
| 216 | Edward Stanly | W | NC-08 | March 4, 1849 Previous service, 1837–1843. | 4th term* | |
| 217 | Charles Stetson | D | ME-06 | March 4, 1849 | 1st term | Left the House in 1851. |
| 218 | Thaddeus Stevens | W | PA-08 | March 4, 1849 | 1st term | |
| 219 | Charles Sweetser | D | OH-10 | March 4, 1849 | 1st term | |
| 220 | John R. Thurman | W | NY-15 | March 4, 1849 | 1st term | Left the House in 1851. |
| 221 | Walter Underhill | W | NY-04 | March 4, 1849 | 1st term | Left the House in 1851. |
| 222 | Hiram Walden | D | NY-21 | March 4, 1849 | 1st term | Left the House in 1851. |
| 223 | Loren P. Waldo | D | CT-01 | March 4, 1849 | 1st term | Left the House in 1851. |
| 224 | Albert G. Watkins | W | TN-02 | March 4, 1849 | 1st term | |
| 225 | Marshall J. Wellborn | D | GA-02 | March 4, 1849 | 1st term | Left the House in 1851. |
| 226 | William A. Whittlesey | D | OH-13 | March 4, 1849 | 1st term | Left the House in 1851. |
| 227 | Isaac Wildrick | D | NJ-03 | March 4, 1849 | 1st term | |
| 228 | Christopher H. Williams | W | TN-11 | March 4, 1849 Previous service, 1837–1843. | 4th term* | |
| 229 | Timothy R. Young | D | IL-03 | March 4, 1849 | 1st term | Left the House in 1851. |
| Thomas Haymond | W | VA-15 | November 8, 1849 | 1st term | Left the House in 1851. | |
| James Meacham | W | VT-03 | December 3, 1849 | 1st term | ||
| William McWillie | D | MS-03 | December 3, 1849 | 1st term | Left the House in 1851. | |
| Amos E. Wood | D | OH-06 | December 3, 1849 | 1st term | Died on November 19, 1850. | |
| Joseph W. Jackson | D | GA-01 | March 4, 1850 | 1st term | ||
| Samuel A. Eliot | W | MA-01 | August 22, 1850 | 1st term | Left the House in 1851. | |
| Edward Gilbert | D | CA | September 11, 1850 | 1st term | Left the House in 1851. | |
| George W. Wright | D | CA | September 11, 1850 | 1st term | Left the House in 1851. | |
| George W. Morrison | D | NH-03 | October 8, 1850 | 1st term | Left the House in 1851. | |
| Joel B. Danner | D | PA-15 | December 2, 1850 | 1st term | Left the House in 1851. | |
| Henry A. Bullard | W | LA-02 | December 5, 1850 Previous service, 1831–1834. | 3rd term* | Left the House in 1851. | |
| Daniel F. Miller | W | IA-01 | December 20, 1850 | 1st term | Left the House in 1851. | |
| Alexander G. Penn | D | LA-03 | December 30, 1850 | 1st term | ||
| John Bell | W | OH-06 | January 7, 1851 | 1st term | Left the House in 1851. | |
| John Brisbin | D | PA-11 | January 15, 1851 | 1st term | Left the House in 1851. | |
| Rank | Delegate | Party | District | Seniority date (Previous service, if any) | No.# of term(s) | Notes |
|---|---|---|---|---|---|---|
| 1 | Henry Hastings Sibley | D | MN | July 7, 1849 Previous service, 1848–1849. | 2nd term* | |
| 2 | Samuel Thurston | D | OR | December 3, 1849 | 1st term | |
This article incorporates public domain material from Biographical Directory of the United States Congress. Federal government of the United States.