Columns: District | Vacator | Reason for change | Successor | Date successor seated
Wisconsin 2nd | Vacant | Robert K. Henry died during previous Congress | Glenn R. Davis (R) | Seated April 22, 1947 | Washington 3rd | Fred Norman (R) | Died April 18, 1947 | Russell Mack (R) | Seated June 7, 1947 | Pennsylvania 8th | Charles Gerlach (R) | Died May 5, 1947 | Franklin Lichtenwalter (R) | Seated September 9, 1947 | Michigan 11th | Fred Bradley (R) | Died May 24, 1947 | Charles Potter (R) | Seated August 26, 1947 | Texas 9th | Joseph J. Mansfield (D) | Died July 12, 1947 | Clark W. Thompson (D) | Seated August 23, 1947 | Massachusetts 9th | Charles Gifford (R) | Died August 23, 1947 | Donald Nicholson (R) | Seated November 18, 1947 | Indiana 10th | Raymond S. Springer (R) | Died August 28, 1947 | Ralph Harvey (R) | Seated November 4, 1947 | Virginia 4th | Patrick Drewry (D) | Died December 21, 1947 | Watkins Abbitt (D) | Seated February 17, 1948 | New York 24th | Benjamin J. Rabin (D) | Resigned December 31, 1947 | Leo Isacson (AL) | Seated February 17, 1948 | Kentucky 9th | John Robsion (R) | Died February 17, 1948 | William Lewis (R) | Seated April 24, 1948 | Missouri 10th | Orville Zimmerman (D) | Died April 7, 1948 | Paul Jones (D) | Seated November 2, 1948 | Illinois 7th | Thomas L. Owens (R) | Died June 7, 1948 | Vacant until next Congress | Vacant until next Congress | Texas 15th | Milton H. West (D) | Died October 28, 1948 | Lloyd Bentsen (D) | Seated December 4, 1948