# List of members of the United States House of Representatives in the 38th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 38th United States Congress listed by seniority. As an historical article, the districts and party affiliations listed reflect those during the 38th Congress (March 4, 1863 – March 3, 1865). 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

| Rank | Representative | Party | District | Seniority date (Previous service, if any) | No.# of term(s) | Notes |
| 1 | Elihu B. Washburne | R | IL-03 | March 4, 1853 | 6th term | Dean of the House |
| 2 | Schuyler Colfax | R | IN-09 | March 4, 1855 | 5th term | Speaker of the House |
| 3 | Justin S. Morrill | R | VT-02 | March 4, 1855 | 5th term |
| 4 | Samuel S. Cox | D | OH-07 | March 4, 1857 | 4th term |
| 5 | Henry L. Dawes | R | MA-10 | March 4, 1857 | 4th term |
| 6 | Reuben Fenton | R | NY-31 | March 4, 1857 Previous service: 1853–1855 | 5th term* | Resigned on December 20, 1864. |
| 7 | Owen Lovejoy | R | IL-05 | March 4, 1857 | 4th term | Died on March 25, 1864. |
| 8 | George H. Pendleton | D | OH-01 | March 4, 1857 | 4th term |
| 9 | Daniel W. Gooch | R | MA-06 | January 31, 1858 | 4th term |
| 10 | John B. Alley | R | MA-05 | March 4, 1859 | 3rd term |
| 11 | James M. Ashley | R | OH-10 | March 4, 1859 | 3rd term |
| 12 | Thomas D. Eliot | R | MA-01 | March 4, 1859 Previous service: 1854–1855 | 4th term* |
| 13 | Augustus Frank | R | NY-29 | March 4, 1859 | 3rd term |
| 14 | James T. Hale | R | PA-18 | March 4, 1859 | 3rd term |
| 15 | William S. Holman | D | IN-04 | March 4, 1859 | 3rd term |
| 16 | Francis William Kellogg | R | MI-04 | March 4, 1859 | 3rd term |
| 17 | Robert Mallory | U | KY-05 | March 4, 1859 | 3rd term |
| 18 | James K. Moorhead | R | PA-22 | March 4, 1859 | 3rd term |
| 19 | John W. Noell | U | MO-03 | March 4, 1859 | 3rd term | Died on March 14, 1863. |
| 20 | Alexander H. Rice | R | MA-03 | March 4, 1859 | 3rd term |
| 21 | James C. Robinson | D | IL-11 | March 4, 1859 | 3rd term |
| 22 | Thaddeus Stevens | R | PA-09 | March 4, 1859 Previous service: 1849–1853 | 5th term* |
| 23 | Edwin H. Webster | UU | MD-02 | March 4, 1859 | 3rd term |
| 24 | William Windom | R | MN-01 | March 4, 1859 | 3rd term |
| 25 | Sydenham E. Ancona | D | PA-08 | March 4, 1861 | 2nd term |
| 26 | Isaac N. Arnold | R | IL-01 | March 4, 1861 | 2nd term |
| 27 | Joseph Bailey | D | PA-15 | March 4, 1861 | 2nd term |
| 28 | Portus Baxter | R | VT-03 | March 4, 1861 | 2nd term |
| 29 | Fernando C. Beaman | R | MI-01 | March 4, 1861 | 2nd term |
| 30 | Francis Preston Blair Jr. | R | MO-01 | March 4, 1861 Previous service: 1857–1859 and 1860 | 4th term** | Resigned on June 10, 1864. |
| 31 | Ambrose W. Clark | R | NY-20 | March 4, 1861 | 2nd term |
| 32 | Erastus Corning | D | NY-14 | March 4, 1861 Previous service: 1857–1859 | 3rd term* | Resigned on October 5, 1863. |
| 33 | James A. Cravens | D | IN-02 | March 4, 1861 | 2nd term |
| 34 | James E. English | D | CT-02 | March 4, 1861 | 2nd term |
| 35 | Henry Grider | U | KY-03 | March 4, 1861 Previous service: 1843–1847 | 4th term* |
| 36 | Aaron Harding | U | KY-04 | March 4, 1861 | 2nd term |
| 37 | Philip Johnson | D | PA-11 | March 4, 1861 | 2nd term |
| 38 | George W. Julian | R | IN-05 | March 4, 1861 Previous service: 1849–1851 | 3rd term* |
| 39 | William D. Kelley | R | PA-04 | March 4, 1861 | 2nd term |
| 40 | John Law | D | IN-01 | March 4, 1861 | 2nd term |
| 41 | Jesse Lazear | D | PA-24 | March 4, 1861 | 2nd term |
| 42 | James R. Morris | D | OH-15 | March 4, 1861 | 2nd term |
| 43 | Warren P. Noble | D | OH-09 | March 4, 1861 | 2nd term |
| 44 | John B. Steele | D | NY-13 | March 4, 1861 | 2nd term |
| 45 | Moses F. Odell | D | NY-03 | March 4, 1861 | 2nd term |
| 46 | Nehemiah Perry | D | NJ-05 | March 4, 1861 | 2nd term |
| 47 | Frederick A. Pike | R | ME-05 | March 4, 1861 | 2nd term |
| 48 | Theodore M. Pomeroy | R | NY-24 | March 4, 1861 | 2nd term |
| 49 | John H. Rice | R | ME-04 | March 4, 1861 | 2nd term |
| 50 | Edward H. Rollins | R | NH-02 | March 4, 1861 | 2nd term |
| 51 | James S. Rollins | U | MO-09 | March 4, 1861 | 2nd term |
| 52 | William G. Steele | D | NJ-03 | March 4, 1861 | 2nd term |
| 53 | Francis Thomas | UU | MD-04 | March 4, 1861 Previous service: 1831–1841 | 7th term* |
| 54 | Robert B. Van Valkenburgh | R | NY-27 | March 4, 1861 | 2nd term |
| 55 | Daniel W. Voorhees | D | IN-07 | March 4, 1861 | 2nd term |
| 56 | William H. Wadsworth | U | KY-09 | March 4, 1861 | 2nd term |
| 57 | Elijah Ward | D | NY-06 | March 4, 1861 Previous service: 1857–1859 | 3rd term* |
| 58 | Chilton A. White | D | OH-06 | March 4, 1861 | 2nd term |
| 59 | Benjamin Wood | D | NY-04 | March 4, 1861 | 2nd term |
| 60 | James F. Wilson | R | IA-01 | October 8, 1861 | 2nd term |
| 61 | Samuel Hooper | R | MA-04 | December 2, 1861 | 2nd term |
| 62 | Anthony L. Knapp | D | IL-10 | December 12, 1861 | 2nd term |
| 63 | William A. Hall | U | MO-08 | January 20, 1862 | 2nd term |
| 64 | William J. Allen | D | IL-13 | June 2, 1862 | 2nd term |
| 65 | John D. Stiles | D | PA-06 | June 3, 1862 | 2nd term |
| 66 | George H. Yeaman | U | KY-02 | December 1, 1862 | 2nd term |
| 67 | Walter D. McIndoe | R | WI-06 | January 26, 1863 | 2nd term |
| 68 | James C. Allen | D | IL | March 4, 1863 Previous service: 1853–1856 and 1856-1857 | 4th term** |
| 69 | William B. Allison | R | IA-03 | March 4, 1863 | 1st term |
| 70 | Oakes Ames | R | MA-02 | March 4, 1863 | 1st term |
| 71 | Lucien Anderson | UU | KY-01 | March 4, 1863 | 1st term |
| 72 | Augustus C. Baldwin | D | MI-05 | March 4, 1863 | 1st term |
| 73 | John D. Baldwin | R | MA-08 | March 4, 1863 | 1st term |
| 74 | James G. Blaine | R | ME-03 | March 4, 1863 | 1st term |
| 75 | George Bliss | D | OH-14 | March 4, 1863 Previous service: 1853–1855 | 2nd term* |
| 76 | Henry T. Blow | U | MO-02 | March 4, 1863 | 1st term |
| 77 | George S. Boutwell | R | MA-07 | March 4, 1863 | 1st term |
| 78 | Sempronius H. Boyd | U | MO-04 | March 4, 1863 | 1st term |
| 79 | Augustus Brandegee | R | CT-03 | March 4, 1863 | 1st term |
| 80 | James Brooks | D | NY-08 | March 4, 1863 Previous service: 1849–1853 | 3rd term* |
| 81 | John Martin Broomall | R | PA-07 | March 4, 1863 | 1st term |
| 82 | James S. Brown | D | WI-01 | March 4, 1863 | 1st term |
| 83 | John W. Chanler | D | NY-07 | March 4, 1863 | 1st term |
| 84 | Freeman Clarke | R | NY-28 | March 4, 1863 | 1st term |
| 85 | Brutus J. Clay | U | KY-07 | March 4, 1863 | 1st term |
| 86 | John Creswell | UU | MD-01 | March 4, 1863 | 1st term |
| 87 | Amasa Cobb | R | WI-03 | March 4, 1863 | 1st term |
| 88 | Alexander Hamilton Coffroth | D | PA-16 | March 4, 1863 | 1st term |
| 89 | Cornelius Cole | R | CA | March 4, 1863 | 1st term |
| 90 | John L. Dawson | D | PA-21 | March 4, 1863 Previous service: 1851–1855 | 3rd term* |
| 91 | Henry W. Davis | UU | MD-03 | March 4, 1863 Previous service: 1855–1861 | 4th term* |
| 92 | Thomas T. Davis | R | NY-23 | March 4, 1863 | 1st term |
| 93 | Henry C. Deming | R | CT-01 | March 4, 1863 | 1st term |
| 94 | Charles Denison | D | PA-12 | March 4, 1863 | 1st term |
| 95 | Nathan F. Dixon II | R | RI-02 | March 4, 1863 Previous service: 1849–1851 | 2nd term* |
| 96 | Ignatius L. Donnelly | R | MN-02 | March 4, 1863 | 1st term |
| 97 | John F. Driggs | R | MI-06 | March 4, 1863 | 1st term |
| 98 | Ebenezer Dumont | R | IN-06 | March 4, 1863 | 1st term |
| 99 | Josiah B. Grinnell | R | IA-04 | March 4, 1863 | 1st term |
| 100 | John R. Eden | D | IL-07 | March 4, 1863 | 1st term |
| 101 | Joseph K. Edgerton | D | IN-10 | March 4, 1863 | 1st term |
| 102 | Charles A. Eldredge | D | WI-04 | March 4, 1863 | 1st term |
| 103 | John F. Farnsworth | R | IL-02 | March 4, 1863 Previous service: 1857–1861 | 3rd term* |
| 104 | William E. Finck | D | OH-12 | March 4, 1863 | 1st term |
| 105 | John Ganson | D | NY-30 | March 4, 1863 | 1st term |
| 106 | James A. Garfield | R | OH-19 | March 4, 1863 | 1st term |
| 107 | John A. Griswold | D | NY-15 | March 4, 1863 | 1st term |
| 108 | Ephraim R. Eckley | R | OH-17 | March 4, 1863 | 1st term |
| 109 | Benjamin Gwinn Harris | D | MD-05 | March 4, 1863 | 1st term |
| 110 | Charles M. Harris | D | IL-04 | March 4, 1863 | 1st term |
| 111 | Henry W. Harrington | D | IN-03 | March 4, 1863 | 1st term |
| 112 | Anson Herrick | D | NY-09 | March 4, 1863 | 1st term |
| 113 | William Higby | R | CA | March 4, 1863 | 1st term |
| 114 | Giles W. Hotchkiss | R | NY-26 | March 4, 1863 | 1st term |
| 115 | Asahel W. Hubbard | R | IA-06 | March 4, 1863 | 1st term |
| 116 | John H. Hubbard | R | CT-04 | March 4, 1863 | 1st term |
| 117 | Calvin T. Hulburd | R | NY-17 | March 4, 1863 | 1st term |
| 118 | Wells A. Hutchins | D | OH-11 | March 4, 1863 | 1st term |
| 119 | Thomas Jenckes | R | RI-01 | March 4, 1863 | 1st term |
| 120 | William Johnston | D | OH-08 | March 4, 1863 | 1st term |
| 121 | John A. Kasson | R | IA-05 | March 4, 1863 | 1st term |
| 122 | Martin Kalbfleisch | D | NY-02 | March 4, 1863 | 1st term |
| 123 | Orlando Kellogg | R | NY-16 | March 4, 1863 Previous service: 1847–1849 | 2nd term* |
| 124 | Francis Kernan | D | NY-21 | March 4, 1863 | 1st term |
| 125 | Austin A. King | U | MO-06 | March 4, 1863 | 1st term |
| 126 | Francis Celeste Le Blond | D | OH-05 | March 4, 1863 | 1st term |
| 127 | DeWitt Clinton Littlejohn | R | NY-22 | March 4, 1863 | 1st term |
| 128 | Benjamin F. Loan | U | MO-07 | March 4, 1863 | 1st term |
| 129 | Alexander Long | D | OH-02 | March 4, 1863 | 1st term |
| 130 | John W. Longyear | R | MI-03 | March 4, 1863 | 1st term |
| 131 | Daniel Marcy | D | NH-01 | March 4, 1863 | 1st term |
| 132 | James M. Marvin | R | NY-18 | March 4, 1863 | 1st term |
| 133 | Archibald McAllister | D | PA-17 | March 4, 1863 | 1st term |
| 134 | John R. McBride | R | OR | March 4, 1863 | 1st term |
| 135 | Joseph W. McClurg | U | MO-05 | March 4, 1863 | 1st term |
| 136 | James F. McDowell | D | IN-11 | March 4, 1863 | 1st term |
| 137 | John F. McKinney | D | OH-04 | March 4, 1863 | 1st term |
| 138 | George Middleton | D | NJ-02 | March 4, 1863 | 1st term |
| 139 | William H. Miller | D | PA-14 | March 4, 1863 | 1st term |
| 140 | Samuel F. Miller | R | NY-19 | March 4, 1863 | 1st term |
| 141 | Daniel Morris | R | NY-25 | March 4, 1863 | 1st term |
| 142 | William R. Morrison | D | IL-12 | March 4, 1863 | 1st term |
| 143 | Amos Myers | R | PA-20 | March 4, 1863 | 1st term |
| 144 | Leonard Myers | R | PA-03 | March 4, 1863 | 1st term |
| 145 | Homer A. Nelson | D | NY-12 | March 4, 1863 | 1st term |
| 146 | Jesse O. Norton | R | IL-06 | March 4, 1863 Previous service: 1853–1857 | 3rd term* |
| 147 | Charles O'Neill | R | PA-02 | March 4, 1863 | 1st term |
| 148 | John O'Neill | D | OH-13 | March 4, 1863 | 1st term |
| 149 | Godlove Stein Orth | R | IN-08 | March 4, 1863 | 1st term |
| 150 | James W. Patterson | R | NH-03 | March 4, 1863 | 1st term |
| 151 | Sidney Perham | R | ME-02 | March 4, 1863 | 1st term |
| 152 | Hiram Price | R | IA-02 | March 4, 1863 | 1st term |
| 153 | William Radford | D | NY-10 | March 4, 1863 | 1st term |
| 154 | Samuel J. Randall | D | PA-01 | March 4, 1863 | 1st term |
| 155 | William H. Randall | UU | KY-08 | March 4, 1863 | 1st term |
| 156 | Andrew J. Rogers | D | NJ-04 | March 4, 1863 | 1st term |
| 157 | Lewis Winans Ross | D | IL-09 | March 4, 1863 | 1st term |
| 158 | Robert C. Schenck | R | OH-03 | March 4, 1863 Previous service: 1843–1851 | 5th term* |
| 159 | Glenni W. Scofield | R | PA-19 | March 4, 1863 | 1st term |
| 160 | Thomas B. Shannon | R | CA | March 4, 1863 | 1st term |
| 161 | Ithamar Sloan | R | WI-02 | March 4, 1863 | 1st term |
| 162 | Green C. Smith | UU | KY-06 | March 4, 1863 | 1st term |
| 163 | Rufus P. Spalding | R | OH-18 | March 4, 1863 | 1st term |
| 164 | John F. Starr | R | NJ-01 | March 4, 1863 | 1st term |
| 165 | Henry G. Stebbins | D | NY-01 | March 4, 1863 | 1st term | Resigned on October 24, 1864. |
| 166 | Myer Strouse | D | PA-10 | March 4, 1863 | 1st term |
| 167 | John T. Stuart | D | IL-08 | March 4, 1863 Previous service: 1839–1843 | 3rd term* |
| 168 | Lorenzo De Medici Sweat | D | ME-01 | March 4, 1863 | 1st term |
| 169 | William Temple | D | DE | March 4, 1863 | 1st term | Died on May 28, 1863. |
| 170 | Martin R. Thayer | R | PA-05 | March 4, 1863 | 1st term |
| 171 | Henry W. Tracy | R | PA-13 | March 4, 1863 | 1st term |
| 172 | Charles Upson | R | MI-02 | March 4, 1863 | 1st term |
| 173 | William B. Washburn | R | MA-09 | March 4, 1863 | 1st term |
| 174 | Ezra Wheeler | D | WI-05 | March 4, 1863 | 1st term |
| 175 | Joseph W. White | D | OH-16 | March 4, 1863 | 1st term |
| 176 | Abel C. Wilder | R | KS | March 4, 1863 | 1st term |
| 177 | Thomas Williams | R | PA-23 | March 4, 1863 | 1st term |
| 178 | Charles H. Winfield | D | NY-11 | March 4, 1863 | 1st term |
| 179 | Fernando Wood | D | NY-05 | March 4, 1863 Previous service: 1841–1843 | 2nd term* |
| 180 | Frederick E. Woodbridge | R | VT-01 | March 4, 1863 | 1st term |
| — | William G. Brown, Sr. | U | WV-02 | December 7, 1863 Previous service: 1845–1849 and 1861–1863 | 4th term** |
| — | John V. L. Pruyn | D | NY-14 | December 7, 1863 | 1st term |
| — | John G. Scott | D | MO-03 | December 7, 1863 | 1st term |
| — | Nathaniel B. Smithers | U | DE | December 7, 1863 | 1st term |
| — | Kellian Whaley | U | WV-03 | December 7, 1863 Previous service: 1861–1863 | 2nd term* |
| — | Jacob B. Blair | U | WV-01 | December 17, 1863 Previous service: 1861–1863 | 2nd term* |
| — | Ebon C. Ingersoll | R | IL-05 | May 20, 1864 | 1st term |
| — | Samuel Knox | U | MO-01 | June 10, 1864 | 1st term |
| — | Henry G. Worthington | R | NV | October 31, 1864 | 1st term |
| — | Dwight Townsend | D | NY-01 | December 5, 1864 | 1st term |

## Delegates

| Rank | Delegate | Party | District | Seniority date (Previous service, if any) | No.# of term(s) |
| 1 | Samuel Gordon Daily | R | NE | May 18, 1860 | 03rd term |
| 2 | Hiram Pitt Bennet | R | CO | August 19, 1861 | 02nd term |
| 3 | George Edward Cole | D | WA | March 4, 1863 | 01st term |
| 4 | William Jayne | | DAK | March 4, 1863 | 01st term |
| 5 | John F. Kinney | D | UT | March 4, 1863 | 01st term |
| 6 | Gordon Newell Mott | R | NV | March 4, 1863 | 01st term |
| 7 | Francisco Perea | R | NM | March 4, 1863 | 01st term |
| | William H. Wallace | R | ID | February 1, 1864 Previous service, 1861–1863. | 02nd term* |
| | John Blair Smith Todd | D | DAK | June 17, 1864 Previous service, 1861–1863. | 02nd term* |
| | Charles Debrille Poston | R | AZ | December 5, 1864 | 01st term |
| | Samuel McLean | D | MT | January 6, 1865 | 01st term |