Illinois is divided into 17 congressional districts, each represented by a member of the United States House of Representatives. The majority of Illinois's districts are located in the Chicago area.
The Illinois General Assembly has the primary responsibility of redrawing congressional district lines following each decennial census. The governor of Illinois has the power to veto proposed congressional district maps, but the General Assembly has the power to override the veto, with the support of 3/5ths of both chambers. In 1971, 1981, and 1991, the General Assembly was unable to come to an agreement, and the map was drawn up by a panel of three federal judges chosen by Democrats and Republicans.
In 2001, the General Assembly was again unable to reach an agreement, and the task of redrawing district boundaries was given to the Illinois congressional delegation. With unified Democratic control of the General Assembly and governor's office during the 2011 and 2021 redistricting cycles, Democrats have been able to redistrict without input from Republicans, leading to districts gerrymandered to favor the Democratic Party that are among the most gerrymandered in the country.
In the 2022 midterm elections, per the 2020 United States census, Illinois lost a congressional seat. From a high of 27 congressional seats apportioned to Illinois following the 1910 and 1930 censuses, the state has lost one to two seats in every re-apportionment cycle since 1940, with the exception of the cycle following the 1970 census.
Current districts and representatives This is a list of United States representatives from Illinois, their terms, district maps, and the district political ratings according to the CPVI. The delegation in the 118th United States Congress has a total of 17 members, with 14 Democrats and 3 Republicans as of 2023.
Current U.S. representatives from Illinois District Member Party Incumbent since CPVI District map Jonathan Jackson January 3, 2023 Robin Kelly April 11, 2013 Delia Ramirez January 3, 2023 Chuy García January 3, 2019 Mike Quigley April 7, 2009 Sean Casten January 3, 2019 Danny Davis January 3, 1997 Raja Krishnamoorthi January 3, 2017 Jan Schakowsky January 3, 1999 Brad Schneider January 3, 2017 Bill Foster January 3, 2013 Mike Bost January 3, 2015 Nikki Budzinski January 3, 2023 Lauren Underwood January 3, 2019 Mary Miller January 3, 2021 Darin LaHood September 10, 2015 Eric Sorensen January 3, 2023
Historical and present district boundaries Table of United States congressional district boundary maps in the State of Illinois, presented chronologically. All redistricting events that took place in Illinois from statehood in 1818 to 2013 are shown. During the periods of 1863-1873, 1893-1895, and 1903-1948, voters in Illinois elected an additional one to two at-large representatives.
Year Statewide map Chicago highlight1818-1833From 1818-1833 Illinois was represented by a single at-large member of Congress.1833-18431843-18531853-18631863-18731873-18831883-18951895-19031903-19481949-19521953-19621963-19661967-1972 1973–1982 1983–1992 1993–2002 2003–2013 2013–2023
Obsolete districts
See also
Illinois's congressional delegations List of United States congressional districts Gerrymandering
References
External links "Explore U.S. House Candidates by Congressional District", interactive map, WTTW