| Representative | Party | Years | Cong ress | Electoral history |
|---|
| District established March 4, 1903 |
James W. Brown (Pittsburgh) | Independent Republican | March 4, 1903 – March 3, 1905 | 58th | Elected in 1902. Retired. |
Andrew J. Barchfeld (Pittsburgh) | Republican | March 3, 1905 – March 3, 1917 | 59th 60th 61st 62nd 63rd 64th | Elected in 1904. Re-elected in 1906. Re-elected in 1908. Re-elected in 1910. Re-elected in 1912. Re-elected in 1914. Retired. |
Guy E. Campbell (Crafton) | Democratic | March 4, 1917 – March 3, 1923 | 65th 66th 67th | Re-elected in 1916. Re-elected in 1918 Re-elected in 1920. Redistricted to the 36th district. |
Stephen G. Porter (Pittsburgh) | Republican | March 4, 1923 – June 27, 1930 | 68th 69th 70th 71st | Redistricted from the 29th district and re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Died. |
| Vacant | June 27, 1930 – November 4, 1930 | 71st | |
Edmund F. Erk (Pittsburgh) | Republican | November 4, 1930 – March 3, 1933 | 71st 72nd | Elected to finish Porter's term. Re-elected in 1930. Lost renomination. |
Michael J. Muldowney (Pittsburgh) | Republican | March 4, 1933 – January 3, 1935 | 73rd | Elected in 1932. Lost re-election. |
Theodore L. Moritz (Pittsburgh) | Democratic | January 3, 1935 – January 3, 1937 | 74th | Elected in 1934. Lost renomination. |
Herman P. Eberharter (Pittsburgh) | Democratic | January 3, 1937 – January 3, 1943 | 75th 76th 77th | Elected in 1936. Re-elected in 1938. Re-elected in 1940. Redistricted to the 31st district. |
James A. Wright (Carnegie) | Democratic | January 3, 1943 – January 3, 1945 | 78th | Redistricted from the 34th district and re-elected in 1942. Lost re-election. |
Herman P. Eberharter (Pittsburgh) | Democratic | January 3, 1945 – January 3, 1953 | 79th 80th 81st 82nd | Redistricted from the 31st district and re-elected in 1944. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Redistricted to the 28th district. |
| District dissolved January 3, 1953 |