List of members representing the district
| Member | Party | Years | Cong ress | Electoral history |
|---|---|---|---|---|
| District established March 4, 1923 | ||||
 M. Clyde Kelly (Crafton) | Republican | March 4, 1923 – March 3, 1933 | 68th 69th 70th 71st 72nd | Redistricted from the 30th district and re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Redistricted to the 31st district . |
 Henry Ellenbogen (Pittsburgh) | Democratic | March 4, 1933 – January 3, 1938 | 73rd 74th 75th | Elected in 1932. Re-elected in 1934. Re-elected in 1936. Resigned to become a judge of the common pleas court of Allegheny County, Pennsylvania |
| Vacant | January 3, 1938 – January 3, 1939 | 75th | ||
| Joseph A. McArdle (Pittsburgh) | Democratic | January 3, 1939 – January 5, 1942 | 76th 77th | Elected in 1938. Re-elected in 1940. Resigned to serve on the Pittsburgh City Council |
| Vacant | January 5, 1942 – May 19, 1942 | 77th | ||
 Elmer J. Holland (Pittsburgh) | Democratic | May 19, 1942 – January 3, 1943 | Elected to finish McArdle's term. Retired. | |
| District dissolved January 3, 1943 | ||||
| District re-established January 3, 1945 | ||||
 Samuel A. Weiss (Glassport) | Democratic | January 3, 1945 – January 7, 1946 | 79th | Redistricted from the 30th district and re-elected in 1944. Resigned to become judge of the Common Pleas Court of Allegheny County, Pennsylvania. |
| Vacant | January 7, 1946 – May 21, 1946 | |||
 Frank Buchanan (McKeesport) | Democratic | May 21, 1946 – April 27, 1951 | 79th 80th 81st 82nd | Elected to finish Weiss's term. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Died. |
| Vacant | April 27, 1951 – July 24, 1951 | 82nd | ||
 Vera Buchanan (McKeesport) | Democratic | July 24, 1951 – January 3, 1953 | Elected to finish her husband's term. Redistricted to the 30th district . | |
| District dissolved January 3, 1953 | ||||
