Columns: District | Vacator | Reason for change | Successor | Date successor seated
Massachusetts 4th | Joseph B. Varnum (DR) | Resigned June 29, 1811 to become U.S. Senator | William M. Richardson (DR) | Seated November 4, 1811 | Virginia 8th | John Hungerford (DR) | Lost contested election November 29, 1811 | John Taliaferro (DR) | Seated November 29, 1811 | North Carolina 3rd | Thomas Blount (DR) | Died February 7, 1812 | William Kennedy (DR) | Seated January 30, 1813 | New York 6th | Robert Le Roy Livingston (F) | Resigned May 6, 1812 | Thomas P. Grosvenor (F) | Seated January 29, 1813 | Missouri Territory | Territory delegate seat established | Territory delegate seat established | Edward Hempstead | Seated November 9, 1812 | Illinois Territory | Territory delegate seat established | Territory delegate seat established | Shadrach Bond | Seated December 3, 1812