| Illinois's 20th congressional district | |
|---|---|
| Obsolete district | |
| Created | 1880 |
| Eliminated | 2000 |
| Years active | 1883-2003 |
The 20th 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 2000 census. It was last represented by John Shimkus who was redistricted into the 19th district.