| Representative |
Party |
Years |
District home |
Notes |
| District created March 4, 1863 |
| William J. Allen |
Democratic |
March 4, 1863 - March 3, 1865 |
|
Redistricted from the 9th district |
| Andrew J. Kuykendall |
Republican |
March 4, 1865 - March 3, 1867 |
|
|
| Green B. Raum |
Republican |
March 4, 1867 - March 3, 1869 |
|
|
| John M. Crebs |
Democratic |
March 4, 1869 - March 3, 1873 |
|
|
| John McNulta |
Republican |
March 4, 1873 - March 3, 1875 |
|
|
| Adlai E. Stevenson |
Democratic |
March 4, 1875 - March 3, 1877 |
|
|
| Thomas F. Tipton |
Republican |
March 4, 1877 - March 3, 1879 |
|
|
| Adlai E. Stevenson |
Democratic |
March 4, 1879 - March 3, 1881 |
|
|
| Dietrich C. Smith |
Republican |
March 4, 1881 - March 3, 1883 |
|
|
| William M. Springer |
Democratic |
March 4, 1883 - March 3, 1895 |
|
Redistricted from the 12th district |
| Vespasian Warner |
Republican |
March 4, 1895 - March 3, 1903 |
|
Redistricted to the 19th district |
| Robert R. Hitt |
Republican |
March 4, 1895 - September 20, 1906 |
|
Redistricted from the 9th district, Died |
| Vacant |
September 20, 1906 - November 6, 1906 |
| Frank O. Lowden |
Republican |
November 6, 1906 - March 3, 1911 |
|
|
| John C. McKenzie |
Republican |
March 4, 1911 - March 3, 1925 |
|
|
| William R. Johnson |
Republican |
March 4, 1925 - March 3, 1933 |
|
|
| Leo E. Allen |
Republican |
March 4, 1933 - January 3, 1949 |
|
Redistricted to the 16th district |
| Ralph E. Church |
Republican |
January 3, 1949 - March 21, 1950 |
|
Redistricted from the 10th district, Died |
| Vacant |
March 21, 1950 - January 3, 1951 |
| Marguerite S. Church |
Republican |
January 3, 1951 - January 3, 1963 |
|
|
| Donald Rumsfeld |
Republican |
January 3, 1963 - May 25, 1969 |
|
Resigned after being appointed Director of the Office of Economic Opportunity |
| Vacant |
May 25, 1969 - November 25, 1969 |
| Phil Crane |
Republican |
November 25, 1969 - January 3, 1973 |
|
Redistricted to the 12th district |
| Robert McClory |
Republican |
January 3, 1973 - January 3, 1983 |
|
Redistricted from the 12th district |
| John N. Erlenborn |
Republican |
January 3, 1983 - January 3, 1985 |
|
Redistricted from the 14th district |
| Harris W. Fawell |
Republican |
January 3, 1985 - January 3, 1999 |
|
|
| Judy Biggert |
Republican |
January 3, 1999 - Present |
|
Incumbent |