This is a complete list of United States representatives during the 36th United States Congress listed by seniority.
As an historical article, the districts and party affiliations listed reflect those during the 36th Congress (March 4, 1859 – March 3, 1861). 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 | John S. Phelps | D | MO-06 | March 4, 1845 | 8th term | Dean of the House |
| 2 | Thomas S. Bocock | D | VA-05 | March 4, 1847 | 7th term | Left the House in 1861. |
| 3 | Williamson R. W. Cobb | D | AL-06 | March 4, 1847 | 7th term | Resigned on January 30, 1861. |
| 4 | John McQueen | D | SC-01 | February 12, 1849 | 7th term | Resigned on December 21, 1860. |
| 5 | Henry A. Edmundson | D | VA-12 | March 4, 1849 | 6th term | Left the House in 1861. |
| 6 | John Millson | D | VA-02 | March 4, 1849 | 6th term | Left the House in 1861. |
| 7 | Thomas B. Florence | D | PA-01 | March 4, 1851 | 5th term | Left the House in 1861. |
| 8 | Galusha A. Grow | R | PA-14 | March 4, 1851 | 5th term | |
| 9 | George S. Houston | D | AL-05 | March 4, 1851 Previous service, 1841–1849. | 9th term* | Resigned on January 21, 1861. |
| 10 | Israel Washburn Jr. | R | ME-05 | March 4, 1851 | 5th term | Resigned on January 1, 1861. |
| 11 | William Barksdale | D | MS-03 | March 4, 1853 | 4th term | Resigned on January 12, 1861. |
| 12 | William W. Boyce | D | SC-06 | March 4, 1853 | 4th term | Resigned on December 21, 1860. |
| 13 | Francis B. Craige | D | NC-07 | March 4, 1853 | 4th term | Left the House in 1861. |
| 14 | William H. English | D | IN-02 | March 4, 1853 | 4th term | Left the House in 1861. |
| 15 | William Goode | D | VA-04 | March 4, 1853 Previous service, 1841–1843. | 5th term* | Died on July 3, 1859. |
| 16 | Thomas H. Ruffin | D | NC-02 | March 4, 1853 | 4th term | Left the House in 1861. |
| 17 | William Smith | D | VA-07 | March 4, 1853 Previous service, 1841–1843. | 5th term* | Left the House in 1861. |
| 18 | Edward Wade | R | OH-19 | March 4, 1853 | 4th term | Left the House in 1861. |
| 19 | Elihu B. Washburne | R | IL-01 | March 4, 1853 | 4th term | |
| 20 | John Bingham | R | OH-21 | March 4, 1855 | 3rd term | |
| 21 | Lawrence O'Bryan Branch | D | NC-04 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 22 | James Buffington | R | MA-02 | March 4, 1855 | 3rd term | |
| 23 | Anson Burlingame | KN | MA-05 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 24 | Henry C. Burnett | D | KY-01 | March 4, 1855 | 3rd term | |
| 25 | Schuyler Colfax | R | IN-09 | March 4, 1855 | 3rd term | |
| 26 | John Covode | W | PA-19 | March 4, 1855 | 3rd term | |
| 27 | Martin J. Crawford | D | GA-02 | March 4, 1855 | 3rd term | Resigned on January 23, 1861. |
| 28 | Thomas G. Davidson | D | LA-03 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 29 | Henry W. Davis | D | MD-04 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 30 | James M. Harris | D | MD-03 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 31 | John Hickman | D | PA-06 | March 4, 1855 | 3rd term | |
| 32 | Justin S. Morrill | R | VT-02 | March 4, 1855 | 3rd term | |
| 33 | John U. Pettit | R | IN-11 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 34 | John Sherman | R | OH-13 | March 4, 1855 | 3rd term | |
| 35 | Francis E. Spinner | R | NY-17 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 36 | Benjamin Stanton | R | OH-08 | March 4, 1855 Previous service, 1851–1853. | 4th term* | Left the House in 1861. |
| 37 | James A. Stewart | D | MD-01 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 38 | Mason Tappan | R | NH-02 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 39 | Miles Taylor | D | LA-02 | March 4, 1855 | 3rd term | Resigned on February 5, 1861. |
| 40 | Henry Waldron | R | MI-02 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 41 | Cadwallader C. Washburn | R | WI-02 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 42 | Warren Winslow | D | NC-03 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 43 | John V. Wright | D | TN-07 | March 4, 1855 | 3rd term | Left the House in 1861. |
| 44 | Laurence M. Keitt | D | SC-03 | August 6, 1856 Previous service, 1853–1856. | 4th term* | Resigned in December 1860. |
| 45 | Muscoe R.H. Garnett | D | VA-01 | December 1, 1856 | 3rd term | Left the House in 1861. |
| 46 | Garnett Adrain | D | NJ-03 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 47 | Thomas L. Anderson | D | MO-02 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 48 | William T. Avery | D | TN-10 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 49 | Milledge L. Bonham | D | SC-04 | March 4, 1857 | 2nd term | Resigned on December 21, 1860. |
| 50 | William D. Brayton | R | RI-02 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 51 | Silas M. Burroughs | R | NY-31 | March 4, 1857 | 2nd term | Died on June 3, 1860. |
| 52 | Horace F. Clark | D | NY-08 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 53 | Sherrard Clemens | D | VA-10 | March 4, 1857 Previous service, 1852–1853. | 3rd term* | Left the House in 1861. |
| 54 | Clark B. Cochrane | R | NY-18 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 55 | John Cochrane | D | NY-06 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 56 | Samuel S. Cox | D | OH-12 | March 4, 1857 | 2nd term | |
| 57 | James Craig | D | MO-04 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 58 | Jabez Lamar Monroe Curry | D | AL-07 | March 4, 1857 | 2nd term | Resigned on January 21, 1861. |
| 59 | Samuel R. Curtis | R | IA-01 | March 4, 1857 | 2nd term | |
| 60 | John G. Davis | D | IN-07 | March 4, 1857 Previous service, 1851–1855. | 4th term* | Left the House in 1861. |
| 61 | Reuben Davis | D | MS-02 | March 4, 1857 | 2nd term | Resigned on January 12, 1861. |
| 62 | Henry L. Dawes | R | MA-11 | March 4, 1857 | 2nd term | |
| 63 | William H. Dimmick | D | PA-13 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 64 | John F. Farnsworth | R | IL-02 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 65 | Reuben Fenton | R | NY-33 | March 4, 1857 Previous service, 1853–1855. | 3rd term* | |
| 66 | Stephen C. Foster | R | ME-06 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 67 | Lucius J. Gartrell | D | GA-04 | March 4, 1857 | 2nd term | Resigned on January 23, 1861. |
| 68 | John A. Gilmer | R | NC-05 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 69 | John B. Haskin | D | NY-09 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 70 | George S. Hawkins | D | FL | March 4, 1857 | 2nd term | Resigned on January 21, 1861. |
| 71 | Joshua Hill | R | GA-07 | March 4, 1857 | 2nd term | Resigned on January 23, 1861. |
| 72 | Charles B. Hoard | R | NY-23 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 73 | James Jackson | D | GA-06 | March 4, 1857 | 2nd term | Resigned on January 23, 1861. |
| 73 | Albert G. Jenkins | D | VA-11 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 75 | William Kellogg | R | IL-04 | March 4, 1857 | 2nd term | |
| 76 | David Kilgore | R | IN-05 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 77 | Jacob M. Kunkel | D | MD-05 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 78 | Lucius Q. C. Lamar II | D | MS-01 | March 4, 1857 | 2nd term | Resigned in December 1860. |
| 79 | Dewitt C. Leach | R | MI-04 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 80 | Owen Lovejoy | R | IL-03 | March 4, 1857 | 2nd term | |
| 81 | William B. Maclay | D | NY-05 | March 4, 1857 Previous service, 1843–1849. | 5th term* | Left the House in 1861. |
| 82 | Horace Maynard | D | TN-02 | March 4, 1857 | 2nd term | |
| 83 | William P. Miles | D | SC-02 | March 4, 1857 | 2nd term | Resigned on December 21, 1860. |
| 84 | William Montgomery | D | PA-20 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 85 | Edward J. Morris | R | PA-02 | March 4, 1857 Previous service, 1843–1845. | 3rd term* | |
| 86 | Isaac N. Morris | D | IL-05 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 87 | Freeman H. Morse | R | ME-04 | March 4, 1857 Previous service, 1843–1845. | 3rd term* | Left the House in 1861. |
| 88 | Sydenham Moore | D | AL-04 | March 4, 1857 | 2nd term | Resigned on January 21, 1861. |
| 89 | Abram B. Olin | R | NY-13 | March 4, 1857 | 2nd term | |
| 90 | George W. Palmer | R | NY-16 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 91 | George H. Pendleton | D | OH-01 | March 4, 1857 | 2nd term | |
| 92 | Samuel Peyton | D | KY-02 | March 4, 1857 Previous service, 1847–1849. | 3rd term* | Left the House in 1861. |
| 93 | John F. Potter | R | WI-01 | March 4, 1857 | 2nd term | |
| 94 | Emory B. Pottle | R | NY-26 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 95 | John Henninger Reagan | D | TX-01 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 96 | Homer E. Royce | R | VT-03 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 97 | Charles L. Scott | D | CA-02 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 98 | Daniel Sickles | D | NY-03 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 99 | Otho R. Singleton | D | MS-04 | March 4, 1857 Previous service, 1853–1855. | 3rd term* | Resigned on January 12, 1861. |
| 100 | James A. Stallworth | D | AL-01 | March 4, 1857 | 2nd term | Resigned on January 21, 1861. |
| 101 | William Stewart | R | PA-23 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 102 | John W. Stevenson | D | KY-10 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 103 | Eli Thayer | R | MA-09 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 104 | Cydnor B. Tompkins | R | OH-16 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 105 | Eliakim P. Walton | R | VT-01 | March 4, 1857 | 2nd term | |
| 106 | William G. Whiteley | D | DE | March 4, 1857 | 2nd term | Left the House in 1861. |
| 107 | James Wilson | R | IN-08 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 108 | Samuel H. Woodson | KN | MO-05 | March 4, 1857 | 2nd term | Left the House in 1861. |
| 109 | Charles Case | R | IN-10 | December 7, 1857 | 2nd term | Left the House in 1861. |
| 110 | John B. Clark | D | MO-03 | December 7, 1857 | 2nd term | |
| 111 | William E. Niblack | D | IN-01 | December 7, 1857 | 2nd term | Left the House in 1861. |
| 112 | Daniel W. Gooch | R | MA-07 | January 31, 1858 | 2nd term | |
| 113 | Clement Vallandigham | D | OH-03 | May 25, 1858 | 2nd term | |
| 114 | John J. McRae | D | MS-05 | December 7, 1858 | 2nd term | Resigned on January 12, 1861. |
| 115 | Zebulon B. Vance | D | NC-08 | December 7, 1858 | 2nd term | Left the House in 1861. |
| 116 | Thomas J. Barr | D | NY-04 | January 17, 1859 | 2nd term | Left the House in 1861. |
| 117 | Charles F. Adams, Sr. | R | MA-03 | March 4, 1859 | 1st term | |
| 118 | Green Adams | D | KY-06 | March 4, 1859 Previous service, 1847–1849. | 2nd term* | Left the House in 1861. |
| 119 | Cyrus Aldrich | R | MN | March 4, 1859 | 1st term | |
| 120 | William Allen | D | OH-04 | March 4, 1859 | 1st term | |
| 121 | John B. Alley | R | MA-06 | March 4, 1859 | 1st term | |
| 122 | William C. Anderson | D | KY-04 | March 4, 1859 | 1st term | Left the House in 1861. |
| 123 | James M. Ashley | R | OH-05 | March 4, 1859 | 1st term | |
| 124 | John D. Ashmore | D | SC-05 | March 4, 1859 | 1st term | Resigned on December 21, 1860. |
| 125 | Elijah Babbitt | R | PA-25 | March 4, 1859 | 1st term | |
| 126 | John R. Barret | D | MO-01 | March 4, 1859 | 1st term | Resigned on June 8, 1860. Returned to the House on December 3, 1860. Left the House in 1861. |
| 127 | Charles L. Beale | R | NY-12 | March 4, 1859 | 1st term | Left the House in 1861. |
| 128 | Samuel S. Blair | R | PA-18 | March 4, 1859 | 1st term | |
| 129 | Alexander Boteler | D | VA-08 | March 4, 1859 | 1st term | Left the House in 1861. |
| 130 | John Edward Bouligny | D | LA-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 131 | Reese B. Brabson | D | TN-03 | March 4, 1859 | 1st term | Left the House in 1861. |
| 132 | George Briggs | R | NY-07 | March 4, 1859 Previous service, 1849–1853. | 3rd term* | Left the House in 1861. |
| 133 | Francis Bristow | D | KY-03 | March 4, 1859 Previous service, 1854–1855. | 2nd term* | Left the House in 1861. |
| 134 | John C. Burch | D | CA-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 135 | Alfred A. Burnham | R | CT-03 | March 4, 1859 | 1st term | |
| 136 | Martin Butterfield | R | NY-25 | March 4, 1859 | 1st term | Left the House in 1861. |
| 137 | James H. Campbell | R | PA-11 | March 4, 1859 Previous service, 1855–1857. | 2nd term* | |
| 138 | John Carey | R | OH-09 | March 4, 1859 | 1st term | Left the House in 1861. |
| 139 | Luther C. Carter | R | NY-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 140 | David Clopton | D | AL-03 | March 4, 1859 | 1st term | Resigned on January 21, 1861. |
| 141 | Roscoe Conkling | R | NY-20 | March 4, 1859 | 1st term | |
| 142 | George B. Cooper | D | MI-01 | March 4, 1859 | 1st term | Resigned on May 15, 1860. |
| 143 | Thomas Corwin | R | OH-07 | March 4, 1859 Previous service, 1831–1840. | 6th term* | |
| 144 | Daniel C. DeJarnette, Sr. | D | VA-03 | March 4, 1859 | 1st term | Left the House in 1861. |
| 145 | Charles Delano | R | MA-10 | March 4, 1859 | 1st term | |
| 146 | R. Holland Duell | R | NY-21 | March 4, 1859 | 1st term | |
| 147 | William M. Dunn | R | IN-03 | March 4, 1859 | 1st term | |
| 148 | Sidney Edgerton | R | OH-18 | March 4, 1859 | 1st term | |
| 149 | Thomas M. Edwards | R | NH-03 | March 4, 1859 | 1st term | |
| 150 | Thomas D. Eliot | R | MA-01 | March 4, 1859 Previous service, 1854–1855. | 2nd term* | |
| 151 | Alfred Ely | R | NY-29 | March 4, 1859 | 1st term | |
| 152 | Emerson Etheridge | KN | TN-09 | March 4, 1859 Previous service, 1853–1857. | 3rd term* | Left the House in 1861. |
| 153 | Orris S. Ferry | R | CT-04 | March 4, 1859 | 1st term | Left the House in 1861. |
| 154 | Philip B. Fouke | D | IL-08 | March 4, 1859 | 1st term | |
| 155 | Augustus Frank | R | NY-30 | March 4, 1859 | 1st term | |
| 156 | Ezra B. French | R | ME-03 | March 4, 1859 | 1st term | Left the House in 1861. |
| 157 | James H. Graham | R | NY-19 | March 4, 1859 | 1st term | Left the House in 1861. |
| 158 | John A. Gurley | R | OH-02 | March 4, 1859 | 1st term | |
| 159 | James T. Hale | R | PA-15 | March 4, 1859 | 1st term | |
| 160 | Chapin Hall | R | PA-24 | March 4, 1859 | 1st term | Left the House in 1861. |
| 161 | Andrew J. Hamilton | D | TX-02 | March 4, 1859 | 1st term | Left the House in 1861. |
| 162 | Thomas Hardeman Jr. | D | GA-03 | March 4, 1859 | 1st term | Resigned on January 23, 1861. |
| 163 | John T. Harris | D | VA-09 | March 4, 1859 | 1st term | Left the House in 1861. |
| 164 | Robert H. Hatton | D | TN-05 | March 4, 1859 | 1st term | Left the House in 1861. |
| 165 | William Helmick | R | OH-15 | March 4, 1859 | 1st term | Left the House in 1861. |
| 166 | Thomas C. Hindman | D | AR-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 167 | William S. Holman | D | IN-04 | March 4, 1859 | 1st term | |
| 168 | William Howard | D | OH-06 | March 4, 1859 | 1st term | Left the House in 1861. |
| 169 | George W. Hughes | D | MD-06 | March 4, 1859 | 1st term | Left the House in 1861. |
| 170 | James Humphrey | R | NY-02 | March 4, 1859 | 1st term | Left the House in 1861. |
| 171 | John Hutchins | R | OH-20 | March 4, 1859 | 1st term | |
| 172 | William Irvine | R | NY-28 | March 4, 1859 | 1st term | Left the House in 1861. |
| 173 | John J. Jones | D | GA-08 | March 4, 1859 | 1st term | Resigned on January 23, 1861. |
| 174 | Benjamin F. Junkin | R | PA-16 | March 4, 1859 | 1st term | Left the House in 1861. |
| 175 | Francis William Kellogg | R | MI-03 | March 4, 1859 | 1st term | |
| 176 | William S. Kenyon | R | NY-11 | March 4, 1859 | 1st term | Left the House in 1861. |
| 177 | John W. Killinger | R | PA-10 | March 4, 1859 | 1st term | |
| 178 | John M. Landrum | D | LA-04 | March 4, 1859 | 1st term | Left the House in 1861. |
| 179 | Charles H. Larrabee | D | WI-03 | March 4, 1859 | 1st term | Left the House in 1861. |
| 180 | James Madison Leach | R | NC-06 | March 4, 1859 | 1st term | Left the House in 1861. |
| 181 | Shelton Leake | D | VA-06 | March 4, 1859 Previous service, 1845–1847. | 2nd term* | Left the House in 1861. |
| 182 | M. Lindley Lee | R | NY-22 | March 4, 1859 | 1st term | Left the House in 1861. |
| 183 | John A. Logan | D | IL-09 | March 4, 1859 | 1st term | |
| 184 | Henry C. Longnecker | R | PA-07 | March 4, 1859 | 1st term | Left the House in 1861. |
| 185 | Dwight Loomis | R | CT-01 | March 4, 1859 | 1st term | |
| 186 | Peter E. Love | D | GA-01 | March 4, 1859 | 1st term | Resigned on January 23, 1861. |
| 187 | Robert Mallory | D | KY-07 | March 4, 1859 | 1st term | |
| 188 | Gilman Marston | R | NH-01 | March 4, 1859 | 1st term | |
| 189 | Charles D. Martin | D | OH-11 | March 4, 1859 | 1st term | Left the House in 1861. |
| 190 | Elbert S. Martin | D | VA-13 | March 4, 1859 | 1st term | Left the House in 1861. |
| 191 | James B. McKean | R | NY-15 | March 4, 1859 | 1st term | |
| 192 | Robert McKnight | R | PA-22 | March 4, 1859 | 1st term | |
| 193 | Edward McPherson | R | PA-17 | March 4, 1859 | 1st term | |
| 194 | William Millward | R | PA-04 | March 4, 1859 Previous service, 1855–1857. | 2nd term* | Left the House in 1861. |
| 195 | Laban T. Moore | D | KY-09 | March 4, 1859 | 1st term | Left the House in 1861. |
| 196 | James K. Moorhead | R | PA-21 | March 4, 1859 | 1st term | |
| 197 | Thomas A.R. Nelson | D | TN-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 198 | John T. Nixon | R | NJ-01 | March 4, 1859 | 1st term | |
| 199 | John W. Noell | D | MO-07 | March 4, 1859 | 1st term | |
| 200 | James M. Quarles | D | TN-08 | March 4, 1859 | 1st term | Left the House in 1861. |
| 201 | John J. Perry | R | ME-02 | March 4, 1859 Previous service, 1855–1857. | 2nd term* | Left the House in 1861. |
| 202 | William Pennington | R | NJ-05 | March 4, 1859 | 1st term | Speaker of the House Left the House in 1861. |
| 203 | Albert G. Porter | R | IN-06 | March 4, 1859 | 1st term | |
| 204 | James L. Pugh | D | AL-02 | March 4, 1859 | 1st term | Resigned on January 21, 1861. |
| 205 | Christopher Robinson | R | RI-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 206 | John H. Reynolds | D | NY-14 | March 4, 1859 | 1st term | Left the House in 1861. |
| 207 | Alexander H. Rice | R | MA-04 | March 4, 1859 | 1st term | |
| 208 | Jetur R. Riggs | D | NJ-04 | March 4, 1859 | 1st term | Left the House in 1861. |
| 209 | James C. Robinson | D | IL-07 | March 4, 1859 | 1st term | Left the House in 1861. |
| 210 | Albert Rust | D | AR-02 | March 4, 1859 Previous service, 1855–1857. | 2nd term* | Left the House in 1861. |
| 211 | George W. Scranton | R | PA-12 | March 4, 1859 | 1st term | |
| 212 | Charles B. Sedgwick | R | NY-24 | March 4, 1859 | 1st term | |
| 213 | William E. Simms | D | KY-08 | March 4, 1859 | 1st term | Left the House in 1861. |
| 214 | William N. H. Smith | R | NC-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 215 | John Schwartz | D | PA-08 | March 4, 1859 | 1st term | Died on June 20, 1860. |
| 216 | Daniel E. Somes | R | ME-01 | March 4, 1859 | 1st term | Left the House in 1861. |
| 217 | Elbridge G. Spaulding | R | NY-32 | March 4, 1859 Previous service, 1849–1851. | 2nd term* | |
| 218 | Cyrus Spink | R | OH-14 | March 4, 1859 | 1st term | Died on May 31, 1859. |
| 219 | Thaddeus Stevens | R | PA-09 | March 4, 1859 Previous service, 1849–1853. | 3rd term* | |
| 220 | William Brickly Stokes | R | TN-04 | March 4, 1859 | 1st term | Left the House in 1861. |
| 221 | John L. N. Stratton | R | NJ-02 | March 4, 1859 | 1st term | |
| 222 | Lansing Stout | D | OR | March 4, 1859 | 1st term | Left the House in 1861. |
| 223 | Thomas C. Theaker | R | OH-17 | March 4, 1859 | 1st term | Left the House in 1861. |
| 224 | James H. Thomas | D | TN-06 | March 4, 1859 Previous service, 1847–1851. | 3rd term* | Left the House in 1861. |
| 225 | Charles R. Train | R | MA-08 | March 4, 1859 | 1st term | |
| 226 | Carey A. Trimble | R | OH-10 | March 4, 1859 | 1st term | |
| 227 | John W. H. Underwood | D | GA-05 | March 4, 1859 | 1st term | Resigned on January 23, 1861. |
| 228 | William Vandever | R | IA-02 | March 4, 1859 | 1st term | |
| 229 | Charles Van Wyck | R | NY-10 | March 4, 1859 | 1st term | |
| 230 | John P. Verree | R | PA-03 | March 4, 1859 | 1st term | |
| 231 | Edwin H. Webster | D | MD-02 | March 4, 1859 | 1st term | |
| 232 | Alfred Wells | R | NY-27 | March 4, 1859 | 1st term | Left the House in 1861. |
| 233 | William Windom | R | MN | March 4, 1859 | 1st term | |
| 234 | John Wood | R | PA-05 | March 4, 1859 | 1st term | Left the House in 1861. |
| 235 | John Woodruff | R | CT-02 | March 4, 1859 Previous service, 1855–1857. | 2nd term* | Left the House in 1861. |
| Harrison G. O. Blake | R | OH-14 | October 11, 1859 | 1st term | ||
| John A. McClernand | D | IL-06 | November 8, 1859 Previous service, 1843–1851. | 5th term* | ||
| Roger A. Pryor | D | VA-04 | December 7, 1859 | 1st term | Left the House in 1861. | |
| William A. Howard | R | MI-01 | May 15, 1860 Previous service, 1855–1859. | 3rd term* | Left the House in 1861. | |
| Francis P. Blair Jr. | D | MO-01 | June 8, 1860 Previous service, 1857–1859. | 2nd term* | Resigned on June 25, 1860. | |
| John Y. Brown | D | KY-05 | December 3, 1860 | 1st term | Left the House in 1861. | |
| Jacob Kerlin McKenty | D | PA-08 | December 3, 1860 | 1st term | Left the House in 1861. | |
| Edwin R. Reynolds | R | NY-31 | December 5, 1860 | 1st term | Left the House in 1861. | |
| Stephen Coburn | R | ME-05 | January 2, 1861 | 1st term | Left the House in 1861. | |
| Martin F. Conway | R | KS | January 29, 1861 | 1st term | ||
| Rank | Delegate | Party | District | Seniority date (Previous service, if any) | No.# of term(s) | Notes |
|---|---|---|---|---|---|---|
| 1 | Miguel Antonio Otero | D | NM | July 23, 1856 | 3rd term | |
| 2 | Marcus Junius Parrott | R | KS | March 4, 1857 | 2nd term | |
| 3 | Isaac Stevens | D | WA | March 4, 1857 | 2nd term | |
| 4 | Experience Estabrook | NE | March 4, 1859 | 1st term | ||
| 5 | William Henry Hooper | D | UT | March 4, 1859 | 1st term | |
| Samuel Gordon Daily | R | NE | May 18, 1860 | 1st term | ||
This article incorporates public domain material from Biographical Directory of the United States Congress. Federal government of the United States.