Illinois's 18th congressional district
The 18th congressional district of Illinois covered central and western Illinois, including all of Jacksonville and Quincy and parts of Bloomington, Peoria, and Springfield. It covered much of the territory represented by Abraham Lincoln during his single term in the House.
| Illinois's 18th congressional district | |
|---|---|
| Obsolete district | |
| Created | 1870 |
| Eliminated | 2020 |
| Years active | 1873–2023 |
It was last represented by Republican Darin LaHood, who took office in September 2015 following a special election.
Republican Aaron Schock previously represented the district from January 2009 until his resignation in March 2015. Darin LaHood is the son of Schock's predecessor, Ray LaHood, and was reelected in 2016, 2018, and 2020.
From 1949 to 2015, the district was always represented by an attendee or graduate of Bradley University. Due to reapportionment after the 2020 U.S. census, the 18th district was eliminated ahead of the 2022 elections.