# List of members of the United States House of Representatives in the 34th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 34th United States Congress listed by seniority. As an historical article, the districts and party affiliations listed reflect those during the 34th Congress (March 4, 1855 – March 3, 1857). 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) | Term # | Notes |
| 1 | Joshua R. Giddings | O | OH-20 | December 5, 1842 Previous service, 1838–1842. | 11th term* | Dean and Speaker of the House |
| 2 | George W. Jones | D | TN-06 | March 4, 1843 | 07th term |
| 3 | Alexander H. Stephens | D | GA-08 | October 2, 1843 | 07th term |
| 4 | Thomas H. Bayly | D | VA-01 | May 6, 1844 | 07th term | Died on June 23, 1856. |
| 5 | John S. Phelps | D | MO-06 | March 4, 1845 | 06th term |
| 6 | Thomas L. Clingman | D | NC-08 | March 4, 1847 Previous service, 1843–1845. | 06th term* |
| 7 | Thomas S. Bocock | D | VA-05 | March 4, 1847 | 05th term |
| 8 | Williamson R. W. Cobb | D | AL-06 | March 4, 1847 | 05th term |
| 9 | Sampson W. Harris | D | AL-07 | March 4, 1847 | 05th term | Left the House in 1857. |
| 10 | William A. Richardson | D | IL-05 | December 6, 1847 | 05th term | Resigned on August 25, 1856. |
| 11 | John McQueen | D | SC-01 | February 12, 1849 | 05th term |
| 12 | Henry Bennett | O | NY-21 | March 4, 1849 | 04th term |
| 13 | Lewis D. Campbell | O | OH-03 | March 4, 1849 | 04th term |
| 14 | Henry A. Edmundson | D | VA-12 | March 4, 1849 | 04th term |
| 15 | Thomas J. D. Fuller | D | ME-06 | March 4, 1849 | 04th term | Left the House in 1857. |
| 16 | Fayette McMullen | D | VA-13 | March 4, 1849 | 04th term | Left the House in 1857. |
| 17 | John Millson | D | VA-02 | March 4, 1849 | 04th term |
| 18 | James L. Orr | D | SC-05 | March 4, 1849 | 04th term |
| 19 | Paulus Powell | D | VA-06 | March 4, 1849 | 04th term |
| 20 | James Meacham | O | VT-01 | December 3, 1849 | 04th term | Died on August 23, 1856. |
| 21 | William Aiken Jr. | D | SC-02 | March 4, 1851 | 03rd term | Left the House in 1857. |
| 22 | John Caskie | D | VA-03 | March 4, 1851 | 03rd term |
| 23 | Charles J. Faulkner | D | VA-08 | March 4, 1851 | 03rd term |
| 24 | Thomas B. Florence | D | PA-01 | March 4, 1851 | 03rd term |
| 25 | Galusha A. Grow | D | PA-14 | March 4, 1851 | 03rd term |
| 26 | Solomon G. Haven | O | NY-32 | March 4, 1851 | 03rd term | Left the House in 1857. |
| 27 | George S. Houston | D | AL-05 | March 4, 1851 Previous service, 1841–1849. | 07th term* |
| 28 | John Letcher | D | VA-09 | March 4, 1851 | 03rd term |
| 29 | Daniel Mace | O | IN-08 | March 4, 1851 | 03rd term |
| 30 | John G. Miller | O | MO-05 | March 4, 1851 | 03rd term | Died on May 11, 1856. |
| 31 | William R. Smith | KN | AL-04 | March 4, 1851 | 03rd term | Left the House in 1857. |
| 32 | Benjamin B. Thurston | D | RI-02 | March 4, 1851 Previous service, 1847–1849. | 04th term* | Left the House in 1857. |
| 33 | Israel Washburn Jr. | O | ME-05 | March 4, 1851 | 03rd term |
| 34 | James C. Allen | D | IL-07 | March 4, 1853 | 02nd term | Resigned on July 18, 1856. Returned to the House on November 4, 1856 Left the House in 1857. |
| 35 | Edward Ball | O | OH-16 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 36 | Nathaniel P. Banks | KN | MA-07 | March 4, 1853 | 02nd term | Speaker of the House |
| 37 | William Barksdale | D | MS-03 | March 4, 1853 | 02nd term |
| 38 | Peter H. Bell | D | TX-02 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 39 | Samuel P. Benson | O | ME-04 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 40 | William W. Boyce | D | SC-06 | March 4, 1853 | 02nd term |
| 41 | Preston Brooks | D | SC-04 | March 4, 1853 | 02nd term | Resigned on July 15, 1856. Returned to the House on August 1, 1856. Died on January 27, 1857. |
| 42 | Samuel Caruthers | O | MO-07 | March 4, 1853 | 02nd term |
| 43 | Francis B. Craige | D | NC-07 | March 4, 1853 | 02nd term |
| 44 | Leander Cox | KN | KY-09 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 45 | Alexander De Witt | KN | MA-09 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 46 | John Dick | O | PA-25 | March 4, 1853 | 02nd term |
| 47 | James F. Dowdell | D | AL-03 | March 4, 1853 | 02nd term |
| 48 | John M. Elliott | D | KY-06 | March 4, 1853 | 02nd term |
| 49 | William H. English | D | IN-02 | March 4, 1853 | 02nd term |
| 50 | Emerson Etheridge | KN | TN-09 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 51 | Thomas T. Flagler | O | NY-31 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 52 | William Goode | D | VA-04 | March 4, 1853 Previous service, 1841–1843. | 03rd term* |
| 53 | Alfred B. Greenwood | D | AR-01 | March 4, 1853 | 02nd term |
| 54 | Aaron Harlan | O | OH-07 | March 4, 1853 | 02nd term |
| 55 | John S. Harrison | O | OH-02 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 56 | Laurence M. Keitt | D | SC-03 | March 4, 1853 | 02nd term | Resigned on July 15, 1856. Returned to the House on August 6, 1856. |
| 57 | Zedekiah Kidwell | D | VA-10 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 58 | James Knox | O | IL-04 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 59 | James J. Lindley | O | MO-03 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 60 | Orsamus B. Matteson | O | NY-20 | March 4, 1853 Previous service, 1849–1851. | 03rd term* | Resigned on February 27, 1857. |
| 61 | Augustus Maxwell | D | FL | March 4, 1853 | 02nd term | Left the House in 1857. |
| 62 | Smith Miller | D | IN-01 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 63 | Edwin B. Morgan | O | NY-25 | March 4, 1853 | 02nd term |
| 64 | Matthias H. Nichols | O | OH-04 | March 4, 1853 | 02nd term |
| 65 | Jesse O. Norton | O | IL-03 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 66 | Andrew Oliver | D | NY-26 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 67 | Mordecai Oliver | O | MO-04 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 68 | Asa Packer | D | PA-13 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 69 | Alexander C. M. Pennington | O | NJ-05 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 70 | Benjamin Pringle | O | NY-30 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 71 | Richard C. Puryear | KN | NC-06 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 72 | Charles Ready | KN | TN-05 | March 4, 1853 | 02nd term |
| 73 | David Ritchie | O | PA-21 | March 4, 1853 | 02nd term |
| 74 | Thomas H. Ruffin | D | NC-02 | March 4, 1853 | 02nd term |
| 75 | Alvah Sabin | O | VT-03 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 76 | Russell Sage | O | NY-13 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 77 | William R. Sapp | O | OH-15 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 78 | James L. Seward | D | GA-01 | March 4, 1853 | 02nd term |
| 79 | George A. Simmons | O | NY-16 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 80 | Samuel A. Smith | D | TN-03 | March 4, 1853 | 02nd term |
| 81 | William Smith | D | VA-07 | March 4, 1853 Previous service, 1841–1843. | 03rd term* |
| 82 | George Vail | D | NJ-04 | March 4, 1853 | 02nd term |
| 83 | Edward Wade | O | OH-19 | March 4, 1853 | 02nd term |
| 84 | Elihu B. Washburne | O | IL-01 | March 4, 1853 | 02nd term |
| 85 | Daniel Wells Jr. | D | WI-01 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 86 | John Wheeler | D | NY-06 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 87 | Daniel B. Wright | D | MS-01 | March 4, 1853 | 02nd term | Left the House in 1857. |
| 88 | Felix Zollicoffer | KN | TN-08 | March 4, 1853 | 02nd term |
| 89 | Jehu G. Jones | D | PA-08 | February 4, 1854 Previous service, 1851–1853. | 03rd term* |
| 90 | Charles J. Albright | O | OH-17 | March 4, 1855 | 01st term | Left the House in 1857. |
| 91 | John Allison | O | PA-23 | March 4, 1855 Previous service, 1851–1853. | 02nd term* | Left the House in 1857. |
| 92 | Lucien Barbour | O | IN-06 | March 4, 1855 | 01st term | Left the House in 1857. |
| 93 | David Barclay | D | PA-24 | March 4, 1855 | 01st term | Left the House in 1857. |
| 94 | Hendley S. Bennett | D | MS-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 95 | Philemon Bliss | O | OH-14 | March 4, 1855 | 01st term |
| 96 | Charles Billinghurst | O | WI-03 | March 4, 1855 | 01st term |
| 97 | John Bingham | O | OH-21 | March 4, 1855 | 01st term |
| 98 | James Bishop | O | NJ-03 | March 4, 1855 | 01st term | Left the House in 1857. |
| 99 | Thomas F. Bowie | D | MD-06 | March 4, 1855 | 01st term |
| 100 | Samuel C. Bradshaw | O | PA-07 | March 4, 1855 | 01st term | Left the House in 1857. |
| 101 | Lawrence O'Bryan Branch | D | NC-04 | March 4, 1855 | 01st term |
| 102 | Samuel Brenton | O | IN-10 | March 4, 1855 Previous service, 1851–1853. | 02nd term* |
| 103 | Jacob Broom | KN | PA-04 | March 4, 1855 | 01st term | Left the House in 1857. |
| 104 | James Buffington | KN | MA-02 | March 4, 1855 | 01st term |
| 105 | Anson Burlingame | KN | MA-05 | March 4, 1855 | 01st term |
| 106 | Henry C. Burnett | D | KY-01 | March 4, 1855 | 01st term |
| 107 | John Cadwalader | D | PA-05 | March 4, 1855 | 01st term | Left the House in 1857. |
| 108 | James H. Campbell | O | PA-11 | March 4, 1855 | 01st term | Left the House in 1857. |
| 109 | John P. Campbell Jr. | KN | KY-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 110 | John S. Carlile | KN | VA-11 | March 4, 1855 | 01st term | Left the House in 1857. |
| 111 | Calvin C. Chaffee | KN | MA-10 | March 4, 1855 | 01st term |
| 112 | Thomas Child Jr. | O | NY-07 | March 4, 1855 | 01st term | Left the House in 1857. |
| 113 | Ezra Clark Jr. | KN | CT-01 | March 4, 1855 | 01st term |
| 114 | Bayard Clarke | O | NY-09 | March 4, 1855 | 01st term | Left the House in 1857. |
| 115 | Isaiah D. Clawson | O | NJ-01 | March 4, 1855 | 01st term |
| 116 | Howell Cobb | D | GA-06 | March 4, 1855 Previous service, 1843–1851. | 05th term* | Left the House in 1857. |
| 117 | Schuyler Colfax | O | IN-09 | March 4, 1855 | 01st term |
| 118 | Linus B. Comins | KN | MA-04 | March 4, 1855 | 01st term |
| 119 | John Covode | O | PA-19 | March 4, 1855 | 01st term |
| 120 | Aaron H. Cragin | KN | NH-03 | March 4, 1855 | 01st term |
| 121 | Elisha D. Cullen | KN | DE | March 4, 1855 | 01st term | Left the House in 1857. |
| 122 | William Cumback | O | IN-04 | March 4, 1855 | 01st term | Left the House in 1857. |
| 123 | Martin J. Crawford | D | GA-02 | March 4, 1855 | 01st term |
| 124 | William S. Damrell | KN | MA-03 | March 4, 1855 | 01st term |
| 125 | Thomas G. Davidson | D | LA-03 | March 4, 1855 | 01st term |
| 126 | Timothy Davis | KN | MA-06 | March 4, 1855 | 01st term |
| 127 | Henry W. Davis | KN | MD-04 | March 4, 1855 | 01st term |
| 128 | Timothy C. Day | O | OH-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 129 | Sidney Dean | KN | CT-03 | March 4, 1855 | 01st term |
| 130 | James W. Denver | D | CA | March 4, 1855 | 01st term | Left the House in 1857. |
| 131 | Samuel Dickson | O | NY-14 | March 4, 1855 | 01st term | Left the House in 1857. |
| 132 | Edward Dodd | O | NY-15 | March 4, 1855 | 01st term |
| 133 | George Grundy Dunn | O | IN-03 | March 4, 1855 Previous service, 1847–1849. | 02nd term* | Left the House in 1857. |
| 134 | Nathan B. Durfee | KN | RI-01 | March 4, 1855 | 01st term |
| 135 | John Rufus Edie | O | PA-18 | March 4, 1855 | 01st term |
| 136 | Francis S. Edwards | O | NY-33 | March 4, 1855 | 01st term | Resigned on February 28, 1857. |
| 137 | Jonas R. Emrie | O | OH-06 | March 4, 1855 | 01st term | Left the House in 1857. |
| 138 | George Eustis Jr. | KN | LA-01 | March 4, 1855 | 01st term |
| 139 | Lemuel D. Evans | KN | TX-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 140 | Nathaniel G. Foster | KN | GA-07 | March 4, 1855 | 01st term | Left the House in 1857. |
| 141 | Henry M. Fuller | O | PA-12 | March 4, 1855 Previous service, 1851–1853. | 02nd term* | Left the House in 1857. |
| 142 | Samuel Galloway | O | OH-12 | March 4, 1855 | 01st term | Left the House in 1857. |
| 143 | William A. Gilbert | O | NY-23 | March 4, 1855 | 01st term | Resigned on February 27, 1857. |
| 144 | Amos P. Granger | O | NY-24 | March 4, 1855 | 01st term |
| 145 | Augustus Hall | D | IA-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 146 | Robert B. Hall | KN | MA-01 | March 4, 1855 | 01st term |
| 147 | Philemon T. Herbert | D | CA | March 4, 1855 | 01st term | Left the House in 1857. |
| 148 | John Hickman | D | PA-06 | March 4, 1855 | 01st term |
| 149 | James M. Harris | O | MD-03 | March 4, 1855 | 01st term |
| 150 | Thomas L. Harris | D | IL-06 | March 4, 1855 Previous service, 1849–1851. | 02nd term* |
| 151 | David P. Holloway | O | IN-05 | March 4, 1855 | 01st term | Left the House in 1857. |
| 152 | Henry W. Hoffman | KN | MD-05 | March 4, 1855 | 01st term | Left the House in 1857. |
| 153 | Thomas R. Horton | O | NY-18 | March 4, 1855 | 01st term | Left the House in 1857. |
| 154 | Valentine B. Horton | O | OH-11 | March 4, 1855 | 01st term |
| 155 | William A. Howard | O | MI-01 | March 4, 1855 | 01st term |
| 156 | Jonas A. Hughston | O | NY-19 | March 4, 1855 | 01st term | Left the House in 1857. |
| 157 | Joshua Jewett | D | KY-05 | March 4, 1855 | 01st term |
| 158 | John Kelly | D | NY-04 | March 4, 1855 | 01st term |
| 159 | William H. Kelsey | O | NY-28 | March 4, 1855 | 01st term |
| 160 | Luther M. Kennett | O | MO-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 161 | Rufus H. King | O | NY-11 | March 4, 1855 | 01st term | Left the House in 1857. |
| 162 | Chauncey L. Knapp | KN | MA-08 | March 4, 1855 | 01st term |
| 163 | Jonathan Knight | O | PA-20 | March 4, 1855 | 01st term | Left the House in 1857. |
| 164 | Ebenezer Knowlton | O | ME-03 | March 4, 1855 | 01st term | Left the House in 1857. |
| 165 | John C. Kunkel | O | PA-10 | March 4, 1855 | 01st term |
| 166 | William A. Lake | KN | MS-04 | March 4, 1855 | 01st term | Left the House in 1857. |
| 167 | Benjamin F. Leiter | O | OH-18 | March 4, 1855 | 01st term |
| 168 | John H. Lumpkin | D | GA-05 | March 4, 1855 Previous service, 1843–1849. | 04th term* | Left the House in 1857. |
| 169 | Alexander K. Marshall | KN | KY-08 | March 4, 1855 | 01st term | Left the House in 1857. |
| 170 | Humphrey Marshall | KN | KY-07 | March 4, 1855 Previous service, 1849–1852. | 03rd term* |
| 171 | Samuel S. Marshall | D | IL-09 | March 4, 1855 | 01st term |
| 172 | Andrew Z. McCarty | O | NY-22 | March 4, 1855 | 01st term | Left the House in 1857. |
| 173 | Killian Miller | O | NY-12 | March 4, 1855 | 01st term | Left the House in 1857. |
| 174 | William Millward | O | PA-03 | March 4, 1855 | 01st term | Left the House in 1857. |
| 175 | Oscar F. Moore | O | OH-10 | March 4, 1855 | 01st term | Left the House in 1857. |
| 176 | Justin S. Morrill | O | VT-02 | March 4, 1855 | 01st term |
| 177 | Richard Mott | O | OH-05 | March 4, 1855 | 01st term |
| 178 | Ambrose S. Murray | O | NY-10 | March 4, 1855 | 01st term |
| 179 | Robert T. Paine | KN | NC-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 180 | John M. Parker | O | NY-27 | March 4, 1855 | 01st term |
| 181 | George W. Peck | D | MI-04 | March 4, 1855 | 01st term | Left the House in 1857. |
| 182 | John J. Pearce | O | PA-15 | March 4, 1855 | 01st term | Left the House in 1857. |
| 183 | Guy R. Pelton | O | NY-03 | March 4, 1855 | 01st term | Left the House in 1857. |
| 184 | John J. Perry | O | ME-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 185 | John U. Pettit | O | IN-11 | March 4, 1855 | 01st term |
| 186 | James Pike | KN | NH-01 | March 4, 1855 | 01st term |
| 187 | Gilchrist Porter | O | MO-02 | March 4, 1855 Previous service, 1851–1853. | 02nd term* | Left the House in 1857. |
| 188 | Samuel Anderson Purviance | O | PA-22 | March 4, 1855 | 01st term |
| 189 | John A. Quitman | D | MS-05 | March 4, 1855 | 01st term |
| 190 | Edwin G. Reade | KN | NC-05 | March 4, 1855 | 01st term | Left the House in 1857. |
| 191 | James B. Ricaud | KN | MD-02 | March 4, 1855 | 01st term |
| 192 | Thomas Rivers | KN | TN-10 | March 4, 1855 | 01st term | Left the House in 1857. |
| 193 | George R. Robbins | O | NJ-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 194 | Anthony E. Roberts | O | PA-09 | March 4, 1855 | 01st term |
| 195 | David F. Robison | O | PA-17 | March 4, 1855 | 01st term | Left the House in 1857. |
| 196 | Albert Rust | D | AR-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 197 | John M. Sandidge | D | LA-04 | March 4, 1855 | 01st term |
| 198 | John H. Savage | D | TN-04 | March 4, 1855 Previous service, 1849–1853. | 03rd term* |
| 199 | Harvey D. Scott | O | IN-07 | March 4, 1855 | 01st term | Left the House in 1857. |
| 200 | John Sherman | O | OH-13 | March 4, 1855 | 01st term |
| 201 | Eli S. Shorter | D | AL-02 | March 4, 1855 | 01st term |
| 202 | William H. Sneed | D | TN-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 203 | Francis E. Spinner | O | NY-17 | March 4, 1855 | 01st term |
| 204 | Benjamin Stanton | O | OH-08 | March 4, 1855 Previous service, 1851–1853. | 02nd term* |
| 205 | James A. Stewart | D | MD-01 | March 4, 1855 | 01st term |
| 206 | James S. T. Stranahan | O | NY-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 207 | Samuel F. Swope | KN | KY-10 | March 4, 1855 | 01st term | Left the House in 1857. |
| 208 | Albert G. Talbott | D | KY-04 | March 4, 1855 | 01st term |
| 209 | Mason Tappan | KN | NH-02 | March 4, 1855 | 01st term |
| 210 | Miles Taylor | D | LA-02 | March 4, 1855 | 01st term |
| 211 | James Thorington | O | IA-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 212 | Lemuel Todd | O | PA-16 | March 4, 1855 | 01st term | Left the House in 1857. |
| 213 | Mark Trafton | KN | MA-11 | March 4, 1855 | 01st term | Left the House in 1857. |
| 214 | Robert P. Trippe | KN | GA-03 | March 4, 1855 | 01st term |
| 215 | Job R. Tyson | O | PA-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 216 | Warner Underwood | KN | KY-03 | March 4, 1855 | 01st term |
| 217 | William Valk | KN | NY-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 218 | Abram Wakeman | O | NY-08 | March 4, 1855 | 01st term | Left the House in 1857. |
| 219 | David S. Walbridge | O | MI-03 | March 4, 1855 | 01st term |
| 220 | Henry Waldron | O | MI-02 | March 4, 1855 | 01st term |
| 221 | Percy Walker | KN | AL-01 | March 4, 1855 | 01st term | Left the House in 1857. |
| 222 | Hiram B. Warner | D | GA-04 | March 4, 1855 | 01st term | Left the House in 1857. |
| 223 | Cooper K. Watson | O | OH-09 | March 4, 1855 | 01st term | Left the House in 1857. |
| 224 | Cadwallader C. Washburn | O | WI-02 | March 4, 1855 | 01st term |
| 225 | Albert G. Watkins | D | TN-01 | March 4, 1855 Previous service, 1849–1853. | 03rd term* |
| 226 | William W. Welch | KN | CT-04 | March 4, 1855 | 01st term | Left the House in 1857. |
| 227 | Thomas R. Whitney | KN | NY-05 | March 4, 1855 | 01st term | Left the House in 1857. |
| 228 | John Williams | D | NY-29 | March 4, 1855 | 01st term | Left the House in 1857. |
| 229 | Warren Winslow | D | NC-03 | March 4, 1855 | 01st term |
| 230 | John M. Wood | O | ME-01 | March 4, 1855 | 01st term |
| 231 | John Woodruff | KN | CT-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 232 | James H. Woodworth | O | IL-02 | March 4, 1855 | 01st term | Left the House in 1857. |
| 233 | John V. Wright | D | TN-07 | March 4, 1855 | 01st term |
| | Thomas P. Akers | KN | MO-05 | August 18, 1856 | 01st term | Left the House in 1857. |
| | Jacob C. Davis | D | IL-05 | November 4, 1856 | 01st term | Left the House in 1857. |
| | James L. D. Morrison | D | IL-08 | November 4, 1856 | 01st term | Left the House in 1857. |
| | George T. Hodges | O | VT-01 | December 1, 1856 | 01st term | Left the House in 1857. |
| | Muscoe R. H. Garnett | D | VA-01 | December 1, 1856 | 01st term |

## Delegates

| Rank | Delegate | Party | District | Seniority date (Previous service, if any) | No.# of term(s) |
| 1 | John Milton Bernhisel | D | UT | March 4, 1851 | 03rd term |
| 2 | Joseph Lane | D | OR | March 4, 1851 | 03rd term |
| 3 | José Manuel Gallegos | D | NM | March 4, 1853 | 02nd term |
| 4 | Henry Mower Rice | D | MN | March 4, 1853 | 02nd term |
| 5 | John Wilkins Whitfield | D | KS | December 20, 1854 | 02nd term |
| 6 | James Patton Anderson | D | WA | March 4, 1855 | 01st term |
| 7 | Bird Beers Chapman | D | NE | March 4, 1855 | 01st term |
| | Miguel Antonio Otero | D | NM | July 23, 1856 | 01st term |
| | John Wilkins Whitfield | D | KS | December 9, 1856 Previous service, 1854–1856. | 03rd term* |