| State: | Illinois |
| District Number: | 21 |
| Obsolete: | yes |
| Created: | 1895 |
| Eliminated: | 1990 |
| Years: | 1895-1993 |
| Population Year: | 1980 |
The 21st congressional district of Illinois was a congressional district for the United States House of Representatives in Illinois. It was eliminated as a result of the 1990 census. It was last represented by Jerry Costello who was redistricted into the 12th district.
| Member | Party | Years | Cong ress | Electoral history | |||
|---|---|---|---|---|---|---|---|
| District created March 4, 1895 | |||||||
| align=left | Everett J. Murphy | Republican | nowrap | March 4, 1895 – March 3, 1897 | Elected in 1894. Lost re-election. | ||
| align=left | Jehu Baker | Democratic | nowrap | March 4, 1897 – March 3, 1899 | Elected in 1896. Retired. | ||
| align=left | William A. Rodenberg | Republican | nowrap | March 4, 1899 – March 3, 1901 | Elected in 1898. Lost re-election. | ||
| align=left | Fred J. Kern | Democratic | nowrap | March 4, 1901 – March 3, 1903 | Elected in 1900. Redistricted to the 22nd district and lost re-election there. | ||
| align=left | Ben F. Caldwell | Democratic | nowrap | March 4, 1903 – March 3, 1905 | Redistricted from the and re-elected in 1902. Lost re-election. | ||
| align=left | Zeno J. Rives | Republican | nowrap | March 4, 1905 – March 3, 1907 | Elected in 1904. Lost re-election. | ||
| align=left | Ben F. Caldwell | Democratic | nowrap | March 4, 1907 – March 3, 1909 | Elected again in 1906. Retired. | ||
| align=left | James M. Graham | Democratic | nowrap | March 4, 1909 – March 3, 1915 | Elected in 1908. Re-elected in 1910. Re-elected in 1912. Lost re-election. | ||
| align=left | Loren E. Wheeler | Republican | nowrap | March 4, 1915 – March 3, 1923 | Elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Lost re-election. | ||
| align=left | J. Earl Major | Democratic | nowrap | March 4, 1923 – March 3, 1925 | Elected in 1922. Lost re-election. | ||
| align=left | Loren E. Wheeler | Republican | nowrap | March 4, 1925 – March 3, 1927 | Elected again in 1924. Lost re-election. | ||
| align=left | J. Earl Major | Democratic | nowrap | March 4, 1927 – March 3, 1929 | Elected again in 1926. Lost re-election. | ||
| align=left | Frank M. Ramey | Republican | nowrap | March 4, 1929 – March 3, 1931 | Elected in 1928. Retired. | ||
| align=left | J. Earl Major | Democratic | nowrap | March 4, 1931 – October 6, 1933 | Elected again in 1930. Re-elected in 1932. Resigned after becoming judge of the US District Court for the Southern District of Illinois. | ||
| Vacant | nowrap | October 6, 1933 – January 3, 1935 | |||||
| align=left | Harry H. Mason | Democratic | nowrap | January 3, 1935 – January 3, 1937 | Elected in 1934. Retired. | ||
| align=left | Frank W. Fries | Democratic | nowrap | January 3, 1937 – January 3, 1941 | Elected in 1936. Re-elected in 1938. Lost re-election. | ||
| align=left | George E. Howell | Republican | nowrap | January 3, 1941 – October 5, 1947 | Elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Resigned after becoming judge of the US Court of Claims. | ||
| Vacant | nowrap | October 5, 1947 – January 3, 1949 | |||||
| align=left | Peter F. Mack Jr. | Democratic | nowrap | January 3, 1949 – January 3, 1963 | Elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Redistricted to the 20th district and lost re-election there. | ||
| align=left | Kenneth J. Gray | Democratic | nowrap | January 3, 1963 – January 3, 1973 | Redistricted from the and re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Redistricted to the . | ||
| align=left | Edward R. Madigan | Republican | nowrap | January 3, 1973 – January 3, 1983 | Elected in 1972. Re-elected in 1974 Re-elected in 1976. Re-elected in 1978. Re-elected in 1980. Redistricted to the . | ||
| align=left | Melvin Price | Democratic | nowrap | January 3, 1983 – April 22, 1988 | Redistricted from the and re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Died. | ||
| Vacant | nowrap | April 22, 1988 – August 9, 1988 | |||||
| align=left | Jerry Costello | Democratic | nowrap | August 9, 1988 – January 3, 1993 | Elected to finish Price's term. Re-elected in 1988. Re-elected in 1990. Redistricted to the . | ||
| District eliminated January 3, 1993 | |||||||