# List of members of the United States House of Representatives in the 37th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 37th United States Congress listed by seniority. As an historical article, the districts and party affiliations listed reflect those during the 37th Congress (March 4, 1861 – March 3, 1863). 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 S. Phelps | D | MO-06 | March 4, 1845 | 09th term | Dean of the House Left the House in 1863. |
| 2 | Galusha A. Grow | R | PA-14 | March 4, 1851 | 06th term | Speaker of the House Left the House in 1863. |
| 3 | Elihu B. Washburne | R | IL-01 | March 4, 1853 | 05th term |
| 4 | John Bingham | R | OH-21 | March 4, 1855 | 04th term | Left the House in 1863. |
| 5 | James Buffington | R | MA-02 | March 4, 1855 | 04th term | Left the House in 1863. |
| 6 | Henry C. Burnett | D | KY-01 | March 4, 1855 | 04th term | Resigned on December 3, 1861. |
| 7 | Schuyler Colfax | R | IN-09 | March 4, 1855 | 04th term |
| 8 | John Covode | R | PA-19 | March 4, 1855 | 04th term | Left the House in 1863. |
| 9 | John Hickman | R | PA-06 | March 4, 1855 | 04th term | Left the House in 1863. |
| 10 | Justin S. Morrill | R | VT-02 | March 4, 1855 | 04th term |
| 11 | John Sherman | R | OH-13 | March 4, 1855 | 04th term | Resigned on March 21, 1861. |
| 12 | Samuel S. Cox | D | OH-12 | March 4, 1857 | 03rd term |
| 13 | Samuel R. Curtis | R | IA-01 | March 4, 1857 | 03rd term | Resigned on August 4, 1861. |
| 14 | Henry L. Dawes | R | MA-11 | March 4, 1857 | 03rd term |
| 15 | Reuben Fenton | R | NY-33 | March 4, 1857 Previous service, 1853–1855. | 04th term* |
| 16 | William Kellogg | R | IL-04 | March 4, 1857 | 03rd term | Left the House in 1863. |
| 17 | Owen Lovejoy | R | IL-03 | March 4, 1857 | 03rd term |
| 18 | Horace Maynard | U | TN-02 | March 4, 1857 | 03rd term | Left the House in 1863. |
| 19 | Edward J. Morris | R | PA-02 | March 4, 1857 Previous service, 1843–1845. | 04th term* | Resigned on June 8, 1861. |
| 20 | Abram B. Olin | R | NY-13 | March 4, 1857 | 03rd term | Left the House in 1863. |
| 21 | George H. Pendleton | D | OH-01 | March 4, 1857 | 03rd term |
| 22 | John F. Potter | R | WI-01 | March 4, 1857 | 03rd term | Left the House in 1863. |
| 23 | Eliakim P. Walton | R | VT-01 | March 4, 1857 | 03rd term | Left the House in 1863. |
| 24 | John B. Clark | D | MO-03 | December 7, 1857 | 03rd term | Resigned on July 13, 1861. |
| 25 | Daniel W. Gooch | R | MA-07 | January 31, 1858 | 03rd term |
| 26 | Clement Vallandigham | D | OH-03 | May 25, 1858 | 03rd term | Left the House in 1863. |
| 27 | Charles Francis Adams, Sr. | R | MA-03 | March 4, 1859 | 02nd term | Resigned on May 1, 1861. |
| 28 | Cyrus Aldrich | R | MN | March 4, 1859 | 02nd term | Left the House in 1863. |
| 29 | William Allen | D | OH-04 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 30 | John B. Alley | R | MA-06 | March 4, 1859 | 02nd term |
| 31 | James M. Ashley | R | OH-05 | March 4, 1859 | 02nd term |
| 32 | Elijah Babbitt | R | PA-25 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 33 | Samuel S. Blair | R | PA-18 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 34 | Alfred A. Burnham | R | CT-03 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 35 | James H. Campbell | R | PA-11 | March 4, 1859 Previous service, 1855–1857. | 03rd term* | Left the House in 1863. |
| 36 | Roscoe Conkling | R | NY-20 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 37 | Thomas Corwin | R | OH-07 | March 4, 1859 Previous service, 1831–1840. | 07th term* | Resigned on March 12, 1861. |
| 38 | Charles Delano | R | MA-10 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 39 | R. Holland Duell | R | NY-21 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 40 | William M. Dunn | R | IN-03 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 41 | Sidney Edgerton | R | OH-18 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 42 | Thomas M. Edwards | R | NH-03 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 43 | Thomas D. Eliot | R | MA-01 | March 4, 1859 Previous service, 1854–1855. | 03rd term* |
| 44 | Alfred Ely | R | NY-29 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 45 | Philip B. Fouke | D | IL-08 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 46 | Augustus Frank | R | NY-30 | March 4, 1859 | 02nd term |
| 47 | John A. Gurley | R | OH-02 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 48 | James T. Hale | R | PA-15 | March 4, 1859 | 02nd term |
| 49 | William S. Holman | D | IN-04 | March 4, 1859 | 02nd term |
| 50 | John Hutchins | R | OH-20 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 51 | Francis William Kellogg | R | MI-03 | March 4, 1859 | 02nd term |
| 52 | John W. Killinger | R | PA-10 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 53 | John A. Logan | D | IL-09 | March 4, 1859 | 02nd term | Resigned on April 2, 1862. |
| 54 | Dwight Loomis | R | CT-01 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 55 | Robert Mallory | U | KY-07 | March 4, 1859 | 02nd term |
| 56 | Gilman Marston | R | NH-01 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 57 | James B. McKean | R | NY-15 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 58 | Robert McKnight | R | PA-22 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 59 | Edward McPherson | R | PA-17 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 60 | James K. Moorhead | R | PA-21 | March 4, 1859 | 02nd term |
| 61 | John T. Nixon | R | NJ-01 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 62 | John W. Noell | D | MO-07 | March 4, 1859 | 02nd term |
| 63 | Albert G. Porter | R | IN-06 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 64 | Alexander H. Rice | R | MA-04 | March 4, 1859 | 02nd term |
| 65 | James C. Robinson | D | IL-07 | March 4, 1859 | 02nd term |
| 66 | George W. Scranton | R | PA-12 | March 4, 1859 | 02nd term | Died on March 24, 1861. |
| 67 | Charles B. Sedgwick | R | NY-24 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 68 | Elbridge G. Spaulding | R | NY-32 | March 4, 1859 Previous service, 1849–1851. | 03rd term* | Left the House in 1863. |
| 69 | Thaddeus Stevens | R | PA-09 | March 4, 1859 Previous service, 1849–1853. | 04th term* |
| 70 | John L. N. Stratton | R | NJ-02 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 71 | Charles R. Train | R | MA-08 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 72 | Carey A. Trimble | R | OH-10 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 73 | William Vandever | R | IA-02 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 74 | Charles Van Wyck | R | NY-10 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 75 | John P. Verree | R | PA-03 | March 4, 1859 | 02nd term | Left the House in 1863. |
| 76 | Edwin H. Webster | U | MD-02 | March 4, 1859 | 02nd term |
| 77 | William Windom | R | MN | March 4, 1859 | 02nd term |
| 78 | Harrison G. O. Blake | R | OH-14 | October 11, 1859 | 02nd term | Left the House in 1863. |
| 79 | John A. McClernand | D | IL-06 | November 8, 1859 Previous service, 1843–1851. | 06th term* | Resigned on October 28, 1861. |
| 80 | Martin F. Conway | R | KS | January 29, 1861 | 02nd term | Left the House in 1863. |
| 81 | Sydenham E. Ancona | D | PA-08 | March 4, 1861 | 01st term |
| 82 | William Appleton | CU | MA-05 | March 4, 1861 Previous service, 1851–1855. | 03rd term* | Resigned on September 27, 1861. |
| 83 | Isaac N. Arnold | R | IL-02 | March 4, 1861 | 01st term |
| 84 | Goldsmith Bailey | R | MA-09 | March 4, 1861 | 01st term | Died on May 8, 1862. |
| 85 | Joseph Bailey | D | PA-16 | March 4, 1861 | 01st term |
| 86 | Stephen Baker | R | NY-12 | March 4, 1861 | 01st term | Left the House in 1863. |
| 87 | Portus Baxter | R | VT-03 | March 4, 1861 | 01st term |
| 88 | Fernando C. Beaman | R | MI-02 | March 4, 1861 | 01st term |
| 89 | Francis Preston Blair Jr. | R | MO-01 | March 4, 1861 Previous service, 1857–1859 and 1860. | 03rd term** |
| 90 | George W. Bridges | U | TN-03 | March 4, 1861 | 01st term | Left the House in 1863. |
| 91 | William G. Brown, Sr. | U | VA-10 | March 4, 1861 Previous service, 1845–1849. | 03rd term* | Left the House in 1863. |
| 92 | George H. Browne | U | RI-02 | March 4, 1861 | 01st term | Left the House in 1863. |
| 93 | Charles B. Calvert | U | MD-06 | March 4, 1861 | 01st term | Left the House in 1863. |
| 94 | John S. Carlile | U | VA-11 | March 4, 1861 Previous service, 1855–1857. | 02nd term* | Resigned on July 9, 1861. |
| 95 | Jacob P. Chamberlain | R | NY-26 | March 4, 1861 | 01st term | Left the House in 1863. |
| 96 | Ambrose W. Clark | R | NY-23 | March 4, 1861 | 01st term |
| 97 | Andrew J. Clements | U | TN-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 98 | George T. Cobb | D | NJ-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 99 | Frederick A. Conkling | R | NY-06 | March 4, 1861 | 01st term | Left the House in 1863. |
| 100 | Erastus Corning | D | NY-14 | March 4, 1861 Previous service, 1857–1859. | 02nd term* |
| 101 | Thomas B. Cooper | D | PA-07 | March 4, 1861 | 01st term | Died on April 4, 1862. |
| 102 | James A. Cravens | D | IN-02 | March 4, 1861 | 01st term |
| 103 | John W. Crisfield | U | MD-01 | March 4, 1861 Previous service, 1847–1849. | 02nd term* | Left the House in 1863. |
| 104 | John J. Crittenden | U | KY-08 | March 4, 1861 | 01st term | Left the House in 1863. |
| 105 | William P. Cutler | R | OH-16 | March 4, 1861 | 01st term | Left the House in 1863. |
| 106 | William M. Davis | R | PA-05 | March 4, 1861 | 01st term | Left the House in 1863. |
| 107 | Isaac C. Delaplaine | D | NY-08 | March 4, 1861 | 01st term | Left the House in 1863. |
| 108 | Alexander S. Diven | R | NY-27 | March 4, 1861 | 01st term | Left the House in 1863. |
| 109 | George W. Dunlap | U | KY-06 | March 4, 1861 | 01st term | Left the House in 1863. |
| 110 | James E. English | D | CT-02 | March 4, 1861 | 01st term |
| 111 | Samuel C. Fessenden | R | ME-03 | March 4, 1861 | 01st term | Left the House in 1863. |
| 112 | George P. Fisher | U | DE | March 4, 1861 | 01st term | Left the House in 1863. |
| 113 | Richard Franchot | R | NY-19 | March 4, 1861 | 01st term | Left the House in 1863. |
| 114 | John N. Goodwin | R | ME-01 | March 4, 1861 | 01st term | Left the House in 1863. |
| 115 | Bradley F. Granger | R | MI-01 | March 4, 1861 | 01st term | Left the House in 1863. |
| 116 | Henry Grider | U | KY-03 | March 4, 1861 Previous service, 1843–1847. | 03rd term* |
| 117 | Edward Haight | D | NY-09 | March 4, 1861 | 01st term | Left the House in 1863. |
| 118 | Luther Hanchett | R | WI-02 | March 4, 1861 | 01st term | Died on November 24, 1862. |
| 119 | Aaron Harding | U | KY-04 | March 4, 1861 | 01st term |
| 120 | Valentine B. Horton | R | OH-11 | March 4, 1861 Previous service, 1855–1859. | 03rd term* | Left the House in 1863. |
| 121 | James S. Jackson | U | KY-02 | March 4, 1861 | 01st term | Resigned on December 13, 1861. |
| 122 | Philip Johnson | D | PA-13 | March 4, 1861 | 01st term |
| 123 | George W. Julian | R | IN-05 | March 4, 1861 Previous service, 1849–1851. | 02nd term* |
| 124 | William D. Kelley | R | PA-04 | March 4, 1861 | 01st term |
| 125 | James Kerrigan | D | NY-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 126 | William E. Lansing | R | NY-22 | March 4, 1861 | 01st term | Left the House in 1863. |
| 127 | John Law | D | IN-01 | March 4, 1861 | 01st term |
| 128 | Jesse Lazear | D | PA-20 | March 4, 1861 | 01st term |
| 129 | Cornelius Leary | U | MD-03 | March 4, 1861 | 01st term | Left the House in 1863. |
| 130 | William E. Lehman | D | PA-01 | March 4, 1861 | 01st term | Left the House in 1863. |
| 131 | Henry May | U | MD-04 | March 4, 1861 Previous service, 1853–1855. | 02nd term* | Left the House in 1863. |
| 132 | John W. Menzies | U | KY-10 | March 4, 1861 | 01st term | Left the House in 1863. |
| 133 | William Mitchell | R | IN-10 | March 4, 1861 | 01st term | Left the House in 1863. |
| 134 | Anson Morrill | R | ME-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 135 | James R. Morris | D | OH-17 | March 4, 1861 | 01st term |
| 136 | Warren P. Noble | D | OH-09 | March 4, 1861 | 01st term |
| 137 | Elijah H. Norton | D | MO-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 138 | Robert H. Nugen | D | OH-15 | March 4, 1861 | 01st term | Left the House in 1863. |
| 139 | Moses F. Odell | D | NY-02 | March 4, 1861 | 01st term |
| 140 | John Patton | R | PA-24 | March 4, 1861 | 01st term | Left the House in 1863. |
| 141 | Nehemiah Perry | D | NJ-05 | March 4, 1861 | 01st term |
| 142 | Timothy Guy Phelps | R | CA | March 4, 1861 | 01st term | Left the House in 1863. |
| 143 | Frederick A. Pike | R | ME-06 | March 4, 1861 | 01st term |
| 144 | Theodore M. Pomeroy | R | NY-25 | March 4, 1861 | 01st term |
| 145 | John W. Reid | D | MO-05 | March 4, 1861 | 01st term | Resigned on August 3, 1861. |
| 146 | John H. Rice | R | ME-05 | March 4, 1861 | 01st term |
| 147 | William A. Richardson | D | IL-05 | March 4, 1861 Previous service, 1847–1856. | 06th term* | Resigned on January 29, 1863. |
| 148 | Albert G. Riddle | R | OH-19 | March 4, 1861 | 01st term | Left the House in 1863. |
| 149 | Edward H. Rollins | R | NH-02 | March 4, 1861 | 01st term |
| 150 | James S. Rollins | CU | MO-02 | March 4, 1861 | 01st term |
| 151 | Aaron A. Sargent | R | CA | March 4, 1861 | 01st term | Left the House in 1863. |
| 152 | John P. C. Shanks | R | IN-11 | March 4, 1861 | 01st term | Left the House in 1863. |
| 153 | William P. Sheffield | U | RI-01 | March 4, 1861 | 01st term | Left the House in 1863. |
| 154 | Samuel Shellabarger | R | OH-08 | March 4, 1861 | 01st term | Left the House in 1863. |
| 155 | Socrates N. Sherman | R | NY-17 | March 4, 1861 | 01st term | Left the House in 1863. |
| 156 | A. Scott Sloan | R | WI-03 | March 4, 1861 | 01st term | Left the House in 1863. |
| 157 | Edward H. Smith | D | NY-01 | March 4, 1861 | 01st term | Left the House in 1863. |
| 158 | John B. Steele | D | NY-11 | March 4, 1861 | 01st term |
| 159 | William G. Steele | D | NJ-03 | March 4, 1861 | 01st term |
| 160 | Andrew J. Thayer | D | OR | March 4, 1861 | 01st term | Resigned on July 30, 1861. |
| 161 | Francis Thomas | U | MD-05 | March 4, 1861 Previous service, 1831–1841. | 06th term* |
| 162 | Rowland E. Trowbridge | R | MI-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 163 | Burt Van Horn | R | NY-31 | March 4, 1861 | 01st term | Left the House in 1863. |
| 164 | Robert B. Van Valkenburgh | R | NY-28 | March 4, 1861 | 01st term |
| 165 | Chauncey Vibbard | D | NY-18 | March 4, 1861 | 01st term | Left the House in 1863. |
| 166 | Daniel W. Voorhees | D | IN-07 | March 4, 1861 | 01st term |
| 167 | William H. Wadsworth | U | KY-09 | March 4, 1861 | 01st term |
| 168 | John W. Wallace | R | PA-23 | March 4, 1861 | 01st term | Left the House in 1863. |
| 169 | William Wall | D | NY-05 | March 4, 1861 | 01st term | Left the House in 1863. |
| 170 | Charles W. Walton | R | ME-02 | March 4, 1861 | 01st term | Resigned on May 26, 1862. |
| 171 | Elijah Ward | D | NY-07 | March 4, 1861 Previous service, 1857–1859. | 02nd term* |
| 172 | Kellian Whaley | U | VA-12 | March 4, 1861 | 01st term | Left the House in 1863. |
| 173 | William A. Wheeler | R | NY-16 | March 4, 1861 | 01st term | Left the House in 1863. |
| 174 | Albert S. White | R | IN-08 | March 4, 1861 Previous service, 1837–1839. | 02nd term* | Left the House in 1863. |
| 175 | Chilton A. White | D | OH-06 | March 4, 1861 | 01st term |
| 176 | Charles A. Wickliffe | U | KY-05 | March 4, 1861 Previous service, 1823–1833. | 06th term* | Left the House in 1863. |
| 177 | Benjamin Wood | D | NY-03 | March 4, 1861 | 01st term |
| 178 | George C. Woodruff | D | CT-04 | March 4, 1861 | 01st term | Left the House in 1863. |
| 179 | Charles H. Upton | U | VA-07 | May 23, 1861 | 01st term | Resigned on February 27, 1862. |
| | Benjamin Thomas | U | MA-03 | June 11, 1861 | 01st term | Left the House in 1863. |
| | Charles J. Biddle | D | PA-02 | July 2, 1861 | 01st term | Left the House in 1863. |
| | Richard A. Harrison | U | OH-07 | July 4, 1861 | 01st term | Left the House in 1863. |
| | Samuel T. Worcester | R | OH-13 | July 4, 1861 | 01st term | Left the House in 1863. |
| | Hendrick B. Wright | D | PA-12 | July 4, 1861 Previous service, 1853–1855. | 02nd term* | Left the House in 1863. |
| | George K. Shiel | D | OR | July 30, 1861 | 01st term | Left the House in 1863. |
| | James F. Wilson | R | IA-01 | October 8, 1861 | 01st term |
| | Jacob B. Blair | U | VA-11 | December 2, 1861 | 01st term | Left the House in 1863. |
| | Samuel Hooper | R | MA-05 | December 2, 1861 | 01st term |
| | Anthony L. Knapp | D | IL-06 | December 12, 1861 | 01st term |
| | William A. Hall | D | MO-03 | January 20, 1862 | 01st term |
| | Thomas L. Price | D | MO-05 | January 21, 1862 | 01st term | Left the House in 1863. |
| | Samuel L. Casey | U | KY-01 | March 10, 1862 | 01st term | Left the House in 1863. |
| | Joseph Segar | U | VA-01 | March 16, 1862 | 01st term | Left the House in 1863. |
| | William J. Allen | D | IL-09 | June 2, 1862 | 01st term |
| | Frederick Low | R | CA | June 3, 1862 | 01st term | Left the House in 1863. |
| | John D. Stiles | D | PA-07 | June 3, 1862 | 01st term |
| | T. A. D. Fessenden | R | ME-02 | December 1, 1862 | 01st term | Left the House in 1863. |
| | Amasa Walker | D | MA-09 | December 1, 1862 | 01st term | Left the House in 1863. |
| | George H. Yeaman | U | KY-02 | December 1, 1862 | 01st term |
| | Michael Hahn | U | LA-02 | December 3, 1862 | 01st term | Left the House in 1863. |
| | Benjamin Flanders | U | LA-01 | December 3, 1862 | 01st term | Left the House in 1863. |
| | Walter D. McIndoe | R | WI-02 | January 26, 1863 | 01st term |
| | Lewis McKenzie | U | VA-07 | February 16, 1863 | 01st term | Left the House in 1863. |

## Delegates

| Rank | Delegate | Party | District | Seniority date (Previous service, if any) | No.# of term(s) |
| 1 | Samuel Gordon Daily | R | NE | May 18, 1860 | 02nd term |
| 2 | John Milton Bernhisel | Ind. | UT | March 4, 1861 Previous service, 1851–1859. | 05th term* |
| 3 | William H. Wallace | D | WA | March 4, 1861 | 01st term |
| 4 | John Sebrie Watts | R | NM | March 4, 1861 | 01st term |
| | Hiram Pitt Bennet | R | CO | August 19, 1861 | 01st term |
| | John Cradlebaugh | Ind. | NV | December 2, 1861 | 01st term |
| | John Blair Smith Todd | D | DAK | December 9, 1861 | 01st term |