nowrap | James K. Gibson (C) | January 28, 1870 |- | | nowrap | Richard S. Ayer (R) | rowspan=2 | January 31, 1870 |- | | nowrap | Lewis McKenzie (C) |- | | Vacant | style="font-size:80%" | Contested election with Henry D. Foster. House declared neither was entitled to seat. House then declared Covode duly elected February 9, 1870 | nowrap | John Covode (R) | February 9, 1870 |- | | rowspan=5 | Vacant | rowspan=5 style="font-size:80%" | Mississippi re-admitted into the Union | nowrap | George E. Harris (R) | rowspan=5 | February 23, 1870 |- | | nowrap | Joseph L. Morphis (R) |- | | nowrap | Henry W. Barry (R) |- | | nowrap | George C. McKee (R) |- | | nowrap | Legrand W. Perce (R) |- | | rowspan=4 | Vacant | rowspan=4 style="font-size:80%" | Texas re-admitted into the Union | nowrap | George W. Whitmore (R) | March 30, 1870 |- | | nowrap | John C. Conner (D) | rowspan=3 | March 31, 1870 |- | | nowrap | William T. Clark (R) |- | | nowrap | Edward Degener (R) |- | | Vacant | style="font-size:80%" | Contested election with Michael Ryan. House declared neither was entitled to seat. Elected to seat thus caused | nowrap | Joseph P. Newsham (R) | May 23, 1870 |- | | Vacant | style="font-size:80%" | Contested election with William D. Simpson. Simpson was never seated. House declared Wallace entitled to seat. | nowrap | Alexander S. Wallace (R) | May 27, 1870 |- | | Vacant | style="font-size:80%" | Contested election with Louis St. Martin. House declared neither was entitled to seat. Elected to seat thus caused | nowrap | J. Hale Sypher (R) | November 7, 1870 |- | | rowspan=7 | Vacant | style="font-size:80%" | Vacancy caused by House declaring Joseph W. Clift not entitled to seat | nowrap | William W. Paine (D) | rowspan=7 | December 22, 1870 |- | | style="font-size:80%" | Vacancy caused by House declaring Nelson Tift not entitled to seat | nowrap | Richard H. Whiteley (R) |- | | style="font-size:80%" | Vacancy caused by House declaring William P. Edwards not entitled to seat | nowrap | Marion Bethune (R) |- | | style="font-size:80%" | Vacancy caused by House declaring Samuel F. Gove not entitled to seat | nowrap | Jefferson