United States congressional delegations from Mississippi
United States Senate 
|Class 1 Senators||Congress||Class 2 Senators|
|Walter Leake (D-R)||15th (1817–1819)||Thomas Hill Williams (D-R)|
|David Holmes (D-R)|
|Powhatan Ellis (D-R)|
|Thomas Buck Reed (D-R)|
|Powhatan Ellis (D-R)||20th (1827–1829)|
|21st (1829–1831)||Thomas Buck Reed (D-R)|
|Robert H. Adams (D-R)|
|George Poindexter (D-R)|
|John Black (W)|
|24th (1835–1837)||Robert J. Walker (D)|
|James F. Trotter (D)|
|Thomas Hickman Williams (D)|
|John Henderson (W)||26th (1839–1841)|
|Jesse Speight (D)||29th (1845–1847)|
|Joseph W. Chalmers (D)|
|30th (1847–1849)||Henry Stuart Foote (D)|
|Jefferson Davis (D)|
|John J. McRae (D)||32nd (1851–1853)|
|Stephen Adams (D)||Walker Brooke (W)|
|33rd (1853–1855)||Albert G. Brown (D)|
|Jefferson Davis (D)||35th (1857–1859)|
|American Civil War||37th (1861–1863)||American Civil War|
|Adelbert Ames (R)||41st (1869–1871)||Hiram R. Revels (R)|
|42nd (1871–1873)||James L. Alcorn (R)|
|Henry R. Pease (R)|
|Blanche K. Bruce (R)||44th (1875–1877)|
|45th (1877–1879)||L.Q.C. Lamar (D)|
|James Z. George (D)||47th (1881–1883)|
|Edward C. Walthall (D)|
|Anselm J. McLaurin (D)|
|54th (1895–1897)||Edward C. Walthall (D)|
|Hernando D. Money (D)||William V. Sullivan (D)|
|57th (1901–1903)||Anselm J. McLaurin (D)|
|James Gordon (D)|
|Le Roy Percy (D)|
|John Sharp Williams (D)||62nd (1911–1913)|
|63rd (1913–1915)||James K. Vardaman (D)|
|66th (1919–1921)||Pat Harrison (D)|
|Hubert D. Stephens (D)||68th (1923–1925)|
|Theodore G. Bilbo (D)||74th (1935–1937)|
|James O. Eastland (D)|
|Wall Doxey (D)|
|78th (1943–1945)||James O. Eastland (D)|
|John C. Stennis (D)|
|Thad Cochran (R)|
|Trent Lott (R)||101st (1989–1991)|
|Roger Wicker (R)|
United States House of Representatives 
1801 - 1817: 1 non-voting delegate 
|Thomas M. Greene|
1817 - 1833: 1 seat 
On December 10, 1817, Mississippi was admitted into the Union as a state and sent one Representative to Congress, elected at-large state-wide.
|Thomas Hinds (J)|
|Franklin E. Plummer (J)|
1833 - 1843: 2 seats 
|Congress||Elected state-wide at-large on a general ticket|
|1st seat||2nd seat|
|Franklin E. Plummer (J)||Harry Cage (J)|
|David Dickson (W)||John Francis Hamtramck Claiborne (J)|
|Samuel Jameson Gholson (D)|
|Thomas Jefferson Word (W)||Seargent S. Prentiss (W)|
|Jacob Thompson (D)||Albert G. Brown (D)|
|William M. Gwin (D)
1843 - 1853: 4 seats 
Starting in 1843, Mississippi's delegation was increased to four seats, still elected at-large state-wide on a general ticket. After 1847, those seats were elected by representative districts.
|Congress||Elected state-wide at-large on a general ticket|
|1st seat||2nd seat||3rd seat||4th seat|
|Jacob Thompson (D)||William Henry Hammett (D)||Robert W. Roberts (D)||Tilghman Tucker (D)|
|Stephen Adams (D)||Jefferson Davis (D)|
|Henry Thomas Ellett (D)|
|Jacob Thompson (D)||Winfield Scott Featherston (D)||Patrick Watson Tompkins (W)||Albert G. Brown (D)|
|William McWillie (D)|
|Benjamin D. Nabers (U)||John A. Wilcox (U)||John D. Freeman (U)|
1853 - 1873: 5 seats 
After the 1850 census, Mississippi gained a 5th seat. For the 33rd Congress, that fifth seat was elected at-large. Starting with the 34th Congress, the new seat was apportioned as a fifth district.
|Daniel Boone Wright (D)||William T. S. Barry (D)||Otho Robards Singleton (D)||Wiley Pope Harris (D)||William Barksdale (D)|
|Daniel Boone Wright (D)||Hendley Stone Bennett (D)||William Barksdale (D)||William Augustus Lake (K-N)||John A. Quitman (D)|
|Lucius Q. C. Lamar (D)||Reuben Davis (D)||Otho Robards Singleton (D)|
|John Jones McRae (D)|
|American Civil War|
|George Emrick Harris (R)||Joseph Lewish Morphis (R)||Henry W. Barry (R)||George Colin McKee (R)||Legrand Winfield Perce (R)|
1873 - 1883: 6 seats 
|Lucius Q. C. Lamar (D)||Albert Richards Howe (R)||Henry W. Barry (R)||Jason Niles (R)||George Colin McKee (R)||John R. Lynch (R)|
|Guilford Wiley Wells (Ind R)||Hernando D. Money (D)||Otho Robards Singleton (D)||Charles E. Hooker (D)|
|Henry Lowndes Muldrow (D)||Van H. Manning (D)||James Ronald Chalmers (D)|
|John R. Lynch (R)|
1883 - 1903: 7 seats 
|Henry Lowndes Muldrow (D)||Elza Jeffords (R)||Hernando D. Money (D)||Otho Robards Singleton (D)||Henry Smith Van Eaton (D)||Ethelbert Barksdale (D)|
|James Ronald Chalmers (Ind)|
|John Mills Allen (D)||James B. Morgan (D)||Thomas C. Catchings (D)||Frederick G. Barry (D)|
|Chapman L. Anderson (D)||T. R. Stockdale (D)||Charles E. Hooker (D)|
|Clarke Lewis (D)|
|John C. Kyle (D)||Joseph Henry Beeman (D)|
|Hernando D. Money (D)||John Sharp Williams (D)|
|Walter McKennon Denny (D)||James G. Spencer (D)|
|William V. Sullivan (D)||Andrew F. Fox (D)||William F. Love (D)||Patrick Henry (D)|
|Thomas Spight (D)||Frank A. McLain (D)|
|Ezekiel S. Candler, Jr. (D)||Patrick Stevens Henry (D)||Charles E. Hooker (D)|
1903 - 1933: 8 seats 
For these three decades, Mississippi had eight seats, the most it has ever been apportioned.
|Ezekiel S. Candler, Jr. (D)||Thomas Spight (D)||Benjamin G. Humphreys II (D)||Wilson S. Hill (D)||Adam M. Byrd (D)||Eaton J. Bowers (D)||Frank A. McLain (D)||John Sharp Williams (D)|
|Thomas U. Sisson (D)||William A. Dickson (D)||James W. Collier (D)|
|Hubert D. Stephens (D)||Samuel Andrew Witherspoon (D)||Pat Harrison (D)|
|Percy E. Quin (D)|
|William Webb Venable (D)|
|Paul B. Johnson, Sr. (D)|
|John E. Rankin (D)||Bill G. Lowrey (D)||Ross A. Collins (D)|
|T. Jeff Busby (D)||T. Webber Wilson (D)|
|William Y. Humphreys (D)|
|William M. Whittington (D)|
|Wall Doxey (D)||Robert S. Hall (D)|
|Lawrence Russell Ellzey (D)|
1933 - 1953: 7 seats 
|John E. Rankin (D)||Wall Doxey (D)||William M. Whittington (D)||T. Jeff Busby (D)||Ross A. Collins (D)||William M. Colmer (D)||Lawrence Russell Ellzey (D)|
|Aaron L. Ford (D)||Aubert C. Dunn (D)||Dan R. McGehee (D)|
|Ross A. Collins (D)|
|Jamie L. Whitten (D)|
|Thomas G. Abernethy (D)||W. Arthur Winstead (D)|
|John B. Williams (D)|
|Frank E. Smith (D)|
1953 - 1963: 6 seats 
|Thomas G. Abernethy (D)||Jamie L. Whitten (D)||Frank E. Smith (D)||John B. Williams (D)||W. Arthur Winstead (D)||William M. Colmer (D)|
1963 - 2003: 5 seats 
|Thomas G. Abernethy (D)||Jamie L. Whitten (D)||John B. Williams (D)||W. Arthur Winstead (D)||William M. Colmer (D)|
|Prentiss Walker (R)|
|Sonny Montgomery (D)|
|Charles H. Griffin (D)|
|Jamie L. Whitten (D)||David R. Bowen (D)||Sonny Montgomery (D)||Thad Cochran (R)||Trent Lott (R)|
|Jon Hinson (R)|
|Wayne Dowdy (D)|
|William W. Franklin (R)|
|Mike Espy (D)|
|Mike Parker (D)||Larkin I. Smith (R)|
|Gene Taylor (D)|
|Bennie G. Thompson (D)|
|Roger F. Wicker (R)||Mike Parker (R)|
|Chip Pickering (R)|
|Ronnie Shows (D)|
2003 - present: 4 seats 
|Roger Wicker (R)||Bennie G. Thompson (D)||Chip Pickering (R)||Gene Taylor (D)|
|Travis Childers (D)|
|Gregg Harper (R)|
|Alan Nunnelee (R)||Steven Palazzo (R)|
- Christopher Rankin died March 14, 1826.
- William Haile resigned September 12, 1828.
- David Dickinson died July 31, 1836.
- Claibourne's and Gholson's elections in 1836 were contested due to election irregularities. The House set aside both contests, and vacated both seats February 5, 1838.
- Jefferson Davis resigned in June 1846 to enlist in the Mexican-American War.
- William Barksdale, Reuben Davis, Otho Robards Singleton and John Jones McRae all resigned on January 12, 1861 upon Mississippi's secession.
- John A. Quitman died July 17, 1858.
- Lucius Q. C. Lamar resigned in December 1860 to support the growing secession movement.
- James Ronald Chalmers successfully contested the election of Van H. Manning.
- John R. Lynch successfully contested the election of James Ronald Chalmers.
- William V. Sullivan resigned May 31, 1898 as he was appointed to the Senate.
- William F. Love died October 16, 1898.
- Benjamin G. Humphreys II died October 16, 1923.
- Samuel A. Witherspoon died November 24, 1915.
- Percy E. Quin died February 4, 1932.
- Wall Doxey resigned September 23, 1941 as he was elected to the Senate in a special election.
- John B. Williams resigned January 16, 1968 as he was elected Governor of Mississippi.
- Jon Hinson resigned April 13, 1981.
- Mike Espy resigned January 22, 1993 as he was appointed U.S. Secretary of Agriculture.
- Larkin I. Smith died August 13, 1989.
- Roger Wicker resigned on December 31, 2007 as he was appointed to the U.S. Senate.