# List of members of the United States House of Representatives in the 30th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 30th United States Congress listed by seniority. As an historical article, the districts and party affiliations listed reflect those during the 30th Congress (March 4, 1847 – March 3, 1849). Current seats and party affiliations on the List of current members of the United States House of Representatives by seniority will be different for certain members.
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 congressman.
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.

## U.S. House seniority list

U.S. House seniority :
| Rank | Representative | Party | District | Seniority date (Previous service, if any) | No.# of term(s) | Notes |
| 1 | John Quincy Adams | W | MA-08 | March 4, 1831 | 09th term | Dean of the House Died on February 23, 1848. |
| 2 | James Iver McKay | D | NC-07 | March 4, 1831 | 09th term | Dean of the House after Adams died. Left the House in 1849. |
| 3 | Robert Rhett | D | SC-07 | March 4, 1837 | 06th term | Left the House in 1849. |
| 4 | Linn Boyd | D | KY-01 | March 4, 1839 Previous service, 1835–1837. | 06th term* |
| 5 | Isaac E. Holmes | D | SC-06 | March 4, 1839 | 05th term |
| 6 | Jacob Thompson | D | MS-01 | March 4, 1839 | 05th term |
| 7 | John Reeves Jones Daniel | D | NC-06 | March 4, 1841 | 04th term |
| 8 | George S. Houston | D | AL-05 | March 4, 1841 | 04th term | Left the House in 1849. |
| 9 | Charles J. Ingersoll | D | PA-04 | March 4, 1841 Previous service, 1813–1815. | 05th term* | Left the House in 1849. |
| 10 | Charles Hudson | W | MA-05 | May 3, 1841 | 04th term | Left the House in 1849. |
| 11 | Joseph R. Ingersoll | W | PA-02 | October 12, 1841 Previous service, 1835–1837. | 05th term* | Left the House in 1849. |
| 12 | Robert C. Winthrop | W | MA-01 | November 29, 1842 Previous service, 1840–1842. | 06th term* | Speaker of the House |
| 13 | Joshua R. Giddings | W | OH-20 | December 5, 1842 Previous service, 1838–1842. | 07th term* |
| 14 | Amos Abbott | W | MA-03 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 15 | Archibald Atkinson | D | VA-01 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 16 | Daniel Moreau Barringer | W | NC-03 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 17 | James A. Black | D | SC-01 | March 4, 1843 | 03rd term | Died on April 3, 1848. |
| 18 | James B. Bowlin | D | MO-01 | March 4, 1843 | 03rd term |
| 19 | Richard Brodhead | D | PA-10 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 20 | Armistead Burt | D | SC-05 | March 4, 1843 | 03rd term |
| 21 | Howell Cobb | D | GA-06 | March 4, 1843 | 03rd term |
| 22 | Jacob Collamer | W | VT-02 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 23 | George Dromgoole | D | VA-02 | March 4, 1843 Previous service, 1835–1841. | 06th term* | Died on April 27, 1847. |
| 24 | Orlando B. Ficklin | D | IL-03 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 25 | Hugh A. Haralson | D | GA-04 | March 4, 1843 | 03rd term |
| 26 | Thomas J. Henley | D | IN-02 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 27 | Washington Hunt | W | NY-34 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 28 | Andrew Johnson | D | TN-01 | March 4, 1843 | 03rd term |
| 29 | George W. Jones | D | TN-05 | March 4, 1843 | 03rd term |
| 30 | Daniel P. King | W | MA-02 | March 4, 1843 | 03rd term |
| 31 | John H. Lumpkin | D | GA-05 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 32 | William B. Maclay | D | NY-04 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 33 | George P. Marsh | W | VT-03 | March 4, 1843 | 03rd term |
| 34 | Robert McClelland | D | MI-01 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 35 | John A. McClernand | D | IL-02 | March 4, 1843 | 03rd term |
| 36 | Abraham R. McIlvaine | W | PA-07 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 37 | John Pettit | D | IN-08 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 38 | Julius Rockwell | W | MA-07 | March 4, 1843 | 03rd term |
| 39 | Robert C. Schenck | W | OH-03 | March 4, 1843 | 03rd term |
| 40 | Richard F. Simpson | D | SC-02 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 41 | Caleb B. Smith | W | IN-04 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 42 | Robert Smith | D | IL-01 | March 4, 1843 | 03rd term | Left the House in 1849. |
| 43 | Andrew Stewart | W | PA-18 | March 4, 1843 Previous service, 1821–1829 and 1831–1835. | 09th term** | Left the House in 1849. |
| 44 | Samuel Finley Vinton | W | OH-12 | March 4, 1843 Previous service, 1823–1837. | 10th term* |
| 45 | John Wentworth | D | IL-04 | March 4, 1843 | 03rd term |
| 46 | Joseph A. Woodward | D | SC-03 | March 4, 1843 | 03rd term |
| 47 | Alexander H. Stephens | W | GA-07 | October 2, 1843 | 03rd term |
| 48 | Joseph Grinnell | W | MA-10 | December 7, 1843 | 03rd term |
| 49 | James Pollock | W | PA-13 | April 5, 1844 | 03rd term | Left the House in 1849. |
| 50 | Thomas H. Bayly | D | VA-07 | May 6, 1844 | 03rd term |
| 51 | Isaac E. Morse | D | LA-04 | December 2, 1844 | 03rd term |
| 52 | George Ashmun | W | MA-06 | March 4, 1845 | 02nd term |
| 53 | Henry Bedinger | D | VA-10 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 54 | John Blanchard | W | PA-17 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 55 | William G. Brown, Sr. | D | VA-15 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 56 | Charles W. Cathcart | D | IN-09 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 57 | John G. Chapman | W | MD-01 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 58 | Lucien Bonaparte Chase | D | TN-09 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 59 | William M. Cocke | W | TN-02 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 60 | John H. Crozier | W | TN-03 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 61 | John D. Cummins | D | OH-16 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 62 | James Dixon | W | CT-01 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 63 | Joseph E. Edsall | D | NJ-03 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 64 | James J. Faran | D | OH-01 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 65 | George Fries | D | OH-17 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 66 | Meredith P. Gentry | W | TN-07 | March 4, 1845 Previous service, 1839–1843. | 04th term* |
| 67 | Artemas Hale | W | MA-09 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 68 | James G. Hampton | W | NJ-01 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 69 | John H. Harmanson | D | LA-03 | March 4, 1845 | 02nd term |
| 70 | Henry W. Hilliard | W | AL-02 | March 4, 1845 | 02nd term |
| 71 | Elias B. Holmes | W | NY-28 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 72 | John W. Houston | W | DE | March 4, 1845 | 02nd term |
| 73 | Samuel D. Hubbard | W | CT-02 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 74 | Timothy Jenkins | D | NY-20 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 75 | James H. Johnson | D | NH-04 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 76 | Thomas B. King | W | GA-01 | March 4, 1845 Previous service, 1839–1843. | 04th term* |
| 77 | Lewis C. Levin | W | PA-01 | March 4, 1845 | 02nd term |
| 78 | Thomas W. Ligon | D | MD-03 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 79 | John Pendleton | W | VA-09 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 80 | John S. Phelps | D | MO-05 | March 4, 1845 | 02nd term |
| 81 | John A. Rockwell | W | CT-03 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 82 | Joseph M. Root | W | OH-21 | March 4, 1845 | 02nd term |
| 83 | William Sawyer | D | OH-05 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 84 | Truman Smith | W | CT-04 | March 4, 1845 Previous service, 1839–1843. | 04th term* | Left the House in 1849. |
| 85 | Alexander D. Sims | D | SC-04 | March 4, 1845 | 02nd term | Died on November 22, 1848. |
| 86 | Frederick P. Stanton | D | TN-10 | March 4, 1845 | 02nd term |
| 87 | John Strohm | W | PA-08 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 88 | Bannon Goforth Thibodeaux | W | LA-02 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 89 | James Thompson | D | PA-23 | March 4, 1845 | 02nd term |
| 90 | Robert Toombs | W | GA-08 | March 4, 1845 | 02nd term |
| 91 | Hugh White | W | NY-16 | March 4, 1845 | 02nd term |
| 92 | William W. Wick | D | IN-05 | March 4, 1845 Previous service, 1839–1841. | 03rd term* | Left the House in 1849. |
| 93 | Hezekiah Williams | D | ME-07 | March 4, 1845 | 02nd term | Left the House in 1849. |
| 94 | David Wilmot | D | PA-12 | March 4, 1845 | 02nd term |
| 95 | Emile La Sére | D | LA-01 | January 29, 1846 | 02nd term |
| 96 | James McDowell | D | VA-11 | March 6, 1846 | 02nd term |
| 97 | David S. Kaufman | D | TX-01 | March 30, 1846 | 02nd term |
| 98 | Timothy Pilsbury | D | TX-02 | March 30, 1846 | 02nd term | Left the House in 1849. |
| 99 | Franklin Welsh Bowdon | D | AL-07 | December 7, 1846 | 02nd term |
| 100 | Shepherd Leffler | D | IA-02 | December 29, 1846 | 02nd term |
| 101 | Green Adams | W | KY-06 | March 4, 1847 | 01st term | Left the House in 1849. |
| 102 | Washington Barrow | W | TN-08 | March 4, 1847 | 01st term | Left the House in 1849. |
| 103 | Richard L. T. Beale | D | VA-08 | March 4, 1847 | 01st term | Left the House in 1849. |
| 104 | Hiram Belcher | W | ME-03 | March 4, 1847 | 01st term | Left the House in 1849. |
| 105 | Kinsley S. Bingham | D | MI-03 | March 4, 1847 | 01st term |
| 106 | Ausburn Birdsall | D | NY-22 | March 4, 1847 | 01st term | Left the House in 1849. |
| 107 | Thomas S. Bocock | D | VA-04 | March 4, 1847 | 01st term |
| 108 | John Botts | W | VA-06 | March 4, 1847 Previous service, 1839–1843. | 03rd term* | Left the House in 1849. |
| 109 | Nathaniel Boyden | W | NC-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 110 | Edward Bradley | D | MI-02 | March 4, 1847 | 01st term | Died on August 5, 1847. |
| 111 | Jasper E. Brady | W | PA-16 | March 4, 1847 | 01st term | Left the House in 1849. |
| 112 | Albert G. Brown | D | MS-04 | March 4, 1847 Previous service, 1839–1841. | 02nd term* |
| 113 | Charles Brown | D | PA-03 | March 4, 1847 Previous service, 1841–1843. | 02nd term* | Left the House in 1849. |
| 114 | Aylette Buckner | W | KY-04 | March 4, 1847 | 01st term | Left the House in 1849. |
| 115 | Chester Pierce Butler | W | PA-11 | March 4, 1847 | 01st term |
| 116 | Edward C. Cabell | W | FL | March 4, 1847 Previous service, 1845–1846. | 02nd term* |
| 117 | Richard S. Canby | W | OH-04 | March 4, 1847 | 01st term | Left the House in 1849. |
| 118 | Asa Clapp | D | ME-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 119 | Franklin Clark | D | ME-04 | March 4, 1847 | 01st term | Left the House in 1849. |
| 120 | Beverly L. Clarke | D | KY-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 121 | Thomas L. Clingman | W | NC-01 | March 4, 1847 Previous service, 1843–1845. | 02nd term* |
| 122 | Williamson R. W. Cobb | D | AL-06 | March 4, 1847 | 01st term |
| 123 | William Collins | D | NY-18 | March 4, 1847 | 01st term | Left the House in 1849. |
| 124 | Harmon S. Conger | W | NY-25 | March 4, 1847 | 01st term |
| 125 | Robert B. Cranston | W | RI-01 | March 4, 1847 Previous service, 1837–1843. | 04th term* | Left the House in 1849. |
| 126 | John W. Crisfield | W | MD-06 | March 4, 1847 | 01st term | Left the House in 1849. |
| 127 | John Crowell | W | OH-19 | March 4, 1847 | 01st term |
| 128 | John Dickey | W | PA-20 | March 4, 1847 Previous service, 1843–1845. | 02nd term* | Left the House in 1849. |
| 129 | Rodolphus Dickinson | D | OH-06 | March 4, 1847 | 01st term |
| 130 | Richard S. Donnell | W | NC-08 | March 4, 1847 | 01st term | Left the House in 1849. |
| 131 | William Duer | W | NY-23 | March 4, 1847 | 01st term |
| 132 | Daniel Duncan | W | OH-10 | March 4, 1847 | 01st term | Left the House in 1849. |
| 133 | Garnett Duncan | W | KY-07 | March 4, 1847 | 01st term | Left the House in 1849. |
| 134 | George G. Dunn | W | IN-06 | March 4, 1847 | 01st term | Left the House in 1849. |
| 135 | George N. Eckert | W | PA-14 | March 4, 1847 | 01st term | Left the House in 1849. |
| 136 | Thomas O. Edwards | W | OH-09 | March 4, 1847 | 01st term | Left the House in 1849. |
| 137 | Elisha Embree | W | IN-01 | March 4, 1847 | 01st term | Left the House in 1849. |
| 138 | Alexander Evans | W | MD-05 | March 4, 1847 | 01st term |
| 139 | Nathan Evans | W | OH-14 | March 4, 1847 | 01st term |
| 140 | John W. Farrelly | W | PA-22 | March 4, 1847 | 01st term | Left the House in 1849. |
| 141 | Winfield S. Featherston | D | MS-02 | March 4, 1847 | 01st term |
| 142 | David Fisher | W | OH-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 143 | Thomas Flournoy | D | VA-03 | March 4, 1847 | 01st term | Left the House in 1849. |
| 144 | John Freedley | W | PA-05 | March 4, 1847 | 01st term |
| 145 | Richard French | D | KY-09 | March 4, 1847 Previous service, 1835–1837 and 1843–1845. | 03rd term** | Left the House in 1849. |
| 146 | Andrew S. Fulton | W | VA-13 | March 4, 1847 | 01st term | Left the House in 1849. |
| 147 | John P. Gaines | W | KY-10 | March 4, 1847 | 01st term | Left the House in 1849. |
| 148 | John Gayle | W | AL-01 | March 4, 1847 | 01st term | Left the House in 1849. |
| 149 | William L. Goggin | W | VA-05 | March 4, 1847 Previous service, 1839–1843 and 1844–1845. | 04th term** | Left the House in 1849. |
| 150 | Daniel Gott | W | NY-24 | March 4, 1847 | 01st term |
| 151 | James S. Green | D | MO-03 | March 4, 1847 | 01st term |
| 152 | Dudley S. Gregory | W | NJ-05 | March 4, 1847 | 01st term | Left the House in 1849. |
| 153 | Nathan K. Hall | W | NY-32 | March 4, 1847 | 01st term | Left the House in 1849. |
| 154 | Willard Preble Hall | D | MO-04 | March 4, 1847 | 01st term |
| 155 | David Hammons | D | ME-01 | March 4, 1847 | 01st term | Left the House in 1849. |
| 156 | Moses Hampton | W | PA-21 | March 4, 1847 | 01st term |
| 157 | Sampson W. Harris | D | AL-03 | March 4, 1847 | 01st term |
| 158 | William Henry | W | VT-01 | March 4, 1847 | 01st term |
| 159 | Hugh Lawson White Hill | D | TN-04 | March 4, 1847 | 01st term | Left the House in 1849. |
| 160 | William T. Haskell | W | TN-11 | March 4, 1847 | 01st term | Left the House in 1849. |
| 161 | John M. Holley | W | NY-27 | March 4, 1847 | 01st term | Died on March 8, 1848. |
| 162 | John W. Hornbeck | W | PA-06 | March 4, 1847 | 01st term | Died on January 16, 1848. |
| 163 | Samuel W. Inge | D | AL-04 | March 4, 1847 | 01st term |
| 164 | Alexander Irvin | W | PA-24 | March 4, 1847 | 01st term | Left the House in 1849. |
| 165 | Alfred Iverson, Sr. | D | GA-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 166 | David S. Jackson | D | NY-06 | March 4, 1847 | 01st term | Resigned on April 19, 1848. |
| 167 | John Jameson | D | MO-02 | March 4, 1847 Previous service, 1839–1841 and 1843–1845. | 03rd term** | Left the House in 1849. |
| 168 | Daniel B. St. John | W | NY-09 | March 4, 1847 | 01st term | Left the House in 1849. |
| 169 | Robert W. Johnson | D | AR | March 4, 1847 | 01st term |
| 170 | John W. Jones | W | GA-03 | March 4, 1847 | 01st term | Left the House in 1849. |
| 171 | Orlando Kellogg | W | NY-14 | March 4, 1847 | 01st term | Left the House in 1849. |
| 172 | William Kennon, Jr. | D | OH-15 | March 4, 1847 | 01st term | Left the House in 1849. |
| 173 | Samuel Lahm | D | OH-18 | March 4, 1847 | 01st term | Left the House in 1849. |
| 174 | Sidney Lawrence | D | NY-15 | March 4, 1847 | 01st term | Left the House in 1849. |
| 175 | William T. Lawrence | W | NY-26 | March 4, 1847 | 01st term | Left the House in 1849. |
| 176 | Abraham Lincoln | W | IL-07 | March 4, 1847 | 01st term | Left the House in 1849. |
| 177 | Frederick W. Lord | D | NY-01 | March 4, 1847 | 01st term | Left the House in 1849. |
| 178 | Job Mann | D | PA-19 | March 4, 1847 Previous service, 1835–1837. | 02nd term* |
| 179 | Dudley Marvin | W | NY-31 | March 4, 1847 Previous service, 1823–1829. | 04th term* | Left the House in 1849. |
| 180 | Robert M. McLane | D | MD-04 | March 4, 1847 | 01st term |
| 181 | John K. Miller | D | OH-11 | March 4, 1847 | 01st term |
| 182 | Charles S. Morehead | W | KY-08 | March 4, 1847 | 01st term |
| 183 | Jonathan D. Morris | D | OH-07 | March 4, 1847 | 01st term |
| 184 | Joseph Mullin | W | NY-19 | March 4, 1847 | 01st term | Left the House in 1849. |
| 185 | Henry C. Murphy | D | NY-02 | March 4, 1847 Previous service, 1843–1845. | 02nd term* | Left the House in 1849. |
| 186 | William Nelson | W | NY-07 | March 4, 1847 | 01st term |
| 187 | Henry Nes | W | PA-15 | March 4, 1847 Previous service, 1843–1845. | 02nd term* |
| 188 | William A. Newell | W | NJ-02 | March 4, 1847 | 01st term |
| 189 | Henry Nicoll | D | NY-03 | March 4, 1847 | 01st term | Left the House in 1849. |
| 190 | David Outlaw | W | NC-09 | March 4, 1847 | 01st term |
| 191 | John G. Palfrey | W | MA-04 | March 4, 1847 | 01st term | Left the House in 1849. |
| 192 | Charles H. Peaslee | D | NH-02 | March 4, 1847 | 01st term |
| 193 | Lucius B. Peck | D | VT-04 | March 4, 1847 | 01st term |
| 194 | George Petrie | D | NY-17 | March 4, 1847 | 01st term | Left the House in 1849. |
| 195 | Samuel Peyton | D | KY-03 | March 4, 1847 | 01st term | Left the House in 1849. |
| 196 | Harvey Putnam | W | NY-33 | March 4, 1847 Previous service, 1838–1839. | 02nd term* |
| 197 | Gideon Reynolds | W | NY-12 | March 4, 1847 | 01st term |
| 198 | Thomas Ritchey | D | OH-13 | March 4, 1847 | 01st term | Left the House in 1849. |
| 199 | John L. Robinson | D | IN-03 | March 4, 1847 | 01st term |
| 200 | William R. Rockhill | D | IN-10 | March 4, 1847 | 01st term | Left the House in 1849. |
| 201 | James D. Roman | W | MD-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 202 | Robert L. Rose | W | NY-29 | March 4, 1847 | 01st term |
| 203 | David Rumsey | W | NY-30 | March 4, 1847 | 01st term |
| 204 | Augustine Henry Shepperd | W | NC-04 | March 4, 1847 Previous service, 1827–1839 and 1841–1843. | 08th term** |
| 205 | Eliakim Sherrill | W | NY-10 | March 4, 1847 | 01st term | Left the House in 1849. |
| 206 | Peter H. Silvester | W | NY-11 | March 4, 1847 | 01st term |
| 207 | John I. Slingerland | W | NY-13 | March 4, 1847 | 01st term | Left the House in 1849. |
| 208 | Ephraim K. Smart | D | ME-05 | March 4, 1847 | 01st term | Left the House in 1849. |
| 209 | George A. Starkweather | D | NY-21 | March 4, 1847 | 01st term | Left the House in 1849. |
| 210 | William Strong | D | PA-09 | March 4, 1847 | 01st term |
| 211 | Frederick A. Tallmadge | W | NY-05 | March 4, 1847 | 01st term | Left the House in 1849. |
| 212 | John L. Taylor | W | OH-08 | March 4, 1847 | 01st term |
| 213 | James Houston Thomas | D | TN-06 | March 4, 1847 | 01st term |
| 214 | John B. Thompson | W | KY-05 | March 4, 1847 | 01st term |
| 215 | Richard W. Thompson | W | IN-07 | March 4, 1847 Previous service, 1841–1843. | 02nd term* | Left the House in 1849. |
| 216 | Robert A. Thompson | D | VA-14 | March 4, 1847 | 01st term | Left the House in 1849. |
| 217 | William Thompson | D | IA-01 | March 4, 1847 | 01st term |
| 218 | Benjamin Babock Thurston | D | RI-02 | March 4, 1847 | 01st term | Left the House in 1849. |
| 219 | Patrick W. Tompkins | W | MS-03 | March 4, 1847 | 01st term | Left the House in 1849. |
| 220 | Amos Tuck | W | NH-01 | March 4, 1847 | 01st term |
| 221 | Thomas J. Turner | D | IL-06 | March 4, 1847 | 01st term | Left the House in 1849. |
| 222 | Abraham W. Venable | D | NC-05 | March 4, 1847 | 01st term |
| 223 | John Van Dyke | W | NJ-04 | March 4, 1847 | 01st term |
| 224 | Cornelius Warren | W | NY-08 | March 4, 1847 | 01st term | Left the House in 1849. |
| 225 | James S. Wiley | D | ME-06 | March 4, 1847 | 01st term | Left the House in 1849. |
| 226 | James Wilson II | W | NH-03 | March 4, 1847 | 01st term |
| | Richard K. Meade | D | VA-02 | August 5, 1847 | 01st term |
| | William B. Preston | W | VA-12 | November 25, 1847 | 01st term | Left the House in 1849. |
| | William A. Richardson | D | IL-05 | December 6, 1847 | 01st term |
| | Charles E. Stuart | D | MI-02 | December 6, 1847 | 01st term | Left the House in 1849. |
| | Samuel A. Bridges | D | PA-06 | March 6, 1848 | 01st term | Left the House in 1849. |
| | Horace Mann | W | MA-08 | April 3, 1848 | 01st term |
| | Mason C. Darling | D | WI-02 | June 8, 1848 | 01st term | Left the House in 1849. |
| | William Pitt Lynde | D | WI-01 | June 8, 1848 | 01st term | Left the House in 1849. |
| | Daniel Wallace | D | SC-01 | June 12, 1848 | 01st term |
| | Esbon Blackmar | W | NY-27 | December 4, 1848 | 01st term | Left the House in 1849. |
| | Horace Greeley | W | NY-06 | December 4, 1848 | 01st term | Left the House in 1849. |
| | John McQueen | D | SC-04 | February 12, 1849 | 01st term |

## Delegates

| Rank | Delegate | Party | District | Seniority date (Previous service, if any) | No.# of term(s) | Notes |
| 1 | John Hubbard Tweedy | W | WI | March 4, 1847 | 01st term | |
| | Henry Hastings Sibley | D | WI | October 30, 1848 | 01st term | |