Illinois has 17 congressional districts in the U.S. House of Representatives, making it a significant voice in Congress. The state’s current district boundaries were established following the 2020 Census redistricting process, which determined how the state’s population would be distributed across its House seats.
Illinois’s House delegation currently has 3 Republicans and 14 Democrats out of 17 seats. All 17 seats are up for election on November 3, 2026.
Illinois is also represented in the U.S. Senate by Tammy Duckworth (D) and Dick Durbin (D). Illinois sends two senators chosen by the whole state and 17 House members chosen district by district. Each of the 17 districts in Illinois elects its own House member, so your address decides who that is.
House Districts
17
Party Balance
3 R / 14 D
Population (2020)
12,812,508
U.S. Senators
Tammy Duckworth (D)
Dick Durbin (D)
All congressional districts in this state, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
Find Your Illinois District
Enter your ZIP code to instantly find which Illinois congressional district you live in.
This page covers U.S. House districts only. Illinois also has state legislative districts, which are drawn separately and elect members of the state legislature. To find yours, use the USAGov directory of elected officials.
All Illinois Congressional Districts
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Learn More
Explore our resources on congressional districts, redistricting, and how to engage with your representatives.
Browse All 435 Districts → What congressional district am I in? →For the 2026 races in Illinois, including the districts to watch and the primary date, see 2026 Congressional Elections in Illinois.
2026 Senate race
Illinois has a U.S. Senate seat on the ballot on November 3, 2026. The seat is currently held by Richard Durbin (D), who is retiring, so this is an open seat. Every voter in Illinois shares the same Senate race, and one of the 17 House races on this page. For every 2026 Senate race, see the 2026 Senate elections tracker.
Learn more about Congress
Illinois representatives and contact details
Illinois has 17 congressional districts.
Illinois congressional delegation
Illinois has 19 seats in Congress: 17 in the U.S. House of Representatives and 2 in the U.S. Senate.
The House delegation has 14 Democrats and 3 Republicans.
House members by party
Democratic (14)
Jonathan L. Jackson (District 1), Robin L. Kelly (District 2), Delia C. Ramirez (District 3), Jesús G. "Chuy" García (District 4), Mike Quigley (District 5), Sean Casten (District 6), Danny K. Davis (District 7), Raja Krishnamoorthi (District 8), Janice D. Schakowsky (District 9), Bradley Scott Schneider (District 10), Bill Foster (District 11), Nikki Budzinski (District 13), Lauren Underwood (District 14), Eric Sorensen (District 17)
Republican (3)
Mike Bost (District 12), Mary E. Miller (District 15), Darin LaHood (District 16)
Illinois in the U.S. Senate
Illinois is represented in the U.S. Senate by Richard J. Durbin (Democratic) and Tammy Duckworth (Democratic).
Seats on the Illinois ballot this year are listed on the Illinois 2026 elections page.
Frequently Asked Questions
How many congressional districts does Illinois have?
Illinois has 17 congressional districts, each electing one member to the U.S. House of Representatives.
Who represents Illinois in the U.S. House of Representatives?
The U.S. Representatives from Illinois are: Jonathan L. Jackson (IL-1), Robin L. Kelly (IL-2), Delia C. Ramirez (IL-3), Jesús G. "Chuy" García (IL-4), Mike Quigley (IL-5), Sean Casten (IL-6), Danny K. Davis (IL-7), Raja Krishnamoorthi (IL-8), Janice D. Schakowsky (IL-9), Bradley Scott Schneider (IL-10), Bill Foster (IL-11), Mike Bost (IL-12), Nikki Budzinski (IL-13), Lauren Underwood (IL-14), Mary E. Miller (IL-15), Darin LaHood (IL-16), Eric Sorensen (IL-17).
How do I find which Illinois congressional district I live in?
Use the lookup on the home page. If your ZIP code spans more than one district, it will ask for your street address.
When is the next election for Illinois U.S. House seats?
All 435 U.S. House seats are up for election every two years, in even-numbered years on the first Tuesday after the first Monday in November.
Districts by ZIP code in Illinois
Illinois covers 1,397 ZIP codes across its 17 districts. A ZIP code is a mail delivery route, not a political boundary, so the two do not line up. 599 of those ZIP codes fall in more than one district.
To get an exact answer for an address, use the lookup on the home page. A full street address resolves a split ZIP code; a five digit ZIP on its own cannot.
ZIP codes in Illinois that cross district lines include:
- 60004: districts 10th, 5th, 8th, 9th
- 60005: districts 3rd, 5th, 8th
- 60007: districts 3rd, 5th, 8th
- 60008: districts 3rd, 5th, 8th
- 60010: districts 11th, 5th, 8th, 9th
- 60013: districts 11th, 5th, 9th
- 60014: districts 11th, 9th
- 60016: districts 3rd, 5th, 8th, 9th
- 60018: districts 3rd, 5th, 8th
- 60020: districts 10th, 11th
- 60021: districts 5th, 9th
- 60025: districts 5th, 9th
Every district page on this site lists the full ZIP code set for that district. ZIP to district data comes from the U.S. Census Bureau block equivalency file for the 119th Congress.
Districts by major city in Illinois
Large cities often sit in more than one congressional district. These are the largest cities named on the district pages for Illinois, with the district or districts that cover each one.
- Addison: district 3rd
- Arlington Heights: district 5th
- Aurora: district 11th
- Belleville: district 13th
- Bellwood: district 7th
- Belvidere: district 16th
- Berwyn: district 4th
- Bloomington: district 17th
- Bolingbrook: district 11th
- Buffalo Grove: district 10th
- Burbank: district 4th
- Calumet City: district 2nd
- Carbondale: district 12th
- Champaign: district 13th
- Charleston: district 15th
- Chicago: district 4th
- Chicago Heights: district 2nd
- Cicero: district 4th
- Crystal Lake: district 9th
- Danville: district 2nd
- DeKalb: district 14th
- Decatur: district 13th
- Des Plaines: district 8th
- Downers Grove: district 6th
- Elgin: district 8th
- Evanston: district 9th
- Glendale Heights: district 3rd
- Glenview: district 9th
- Godfrey: district 15th
- Hoffman Estates: district 8th
- Homer Glen: district 1st
- Jacksonville: district 15th
- Joliet: district 14th
- Lansing: district 2nd
- Lockport: district 1st
- Loves Park: district 16th
- Machesney Park: district 16th
- Marion: district 12th
- Maywood: district 7th
- Mount Prospect: district 5th
- Mount Vernon: district 12th
- Naperville: district 11th
- New Lenox: district 1st
- Normal: district 17th
- Northbrook: district 10th
- O'Fallon: district 12th
- Oak Forest: district 1st
- Oak Lawn: district 6th
- Oak Park: district 7th
- Orland Park: district 6th
- Palatine: district 5th
- Park Ridge: district 5th
- Pekin: district 16th
- Peoria: district 17th
- Plainfield: district 14th
- Quincy: district 15th
- Rockford: district 17th
- Romeoville: district 14th
- Schaumburg: district 8th
- Skokie: district 9th
- Springfield: district 13th
- Tinley Park: district 6th
- Waukegan: district 10th
- West Chicago: district 3rd
- Westchester: district 7th
- Wheaton: district 3rd
- Wheeling: district 10th
- Woodridge: district 11th
City coverage is drawn from the district profiles on this site, which are based on U.S. Census Bureau data for the 119th Congress.
How many representatives does Illinois have?
Illinois has 17 seats in the U.S. House of Representatives, one for each congressional district. It also elects 2 U.S. senators, as every state does. The number of House seats is set by apportionment after each census.
Local surveillance camera contracts
Automated license plate reader contracts are approved locally, by city councils and county boards, not by Congress. 5 places in this state have a contract record documented from public sources on Who Approved This, an independent public-records project.
Illinois on the November 3, 2026 ballot
All 17 Illinois seats in the U.S. House are on the ballot on Tuesday, November 3, 2026. House terms run 2 years, so every seat is contested at each general election. Winners take office on January 3, 2027.
A U.S. Senate seat is also on the ballot in Illinois. It is held by Richard Durbin (Democratic). In the 2026 race, the seat is open because the incumbent is retiring. All 35 Senate races in 2026.
Polling places in Illinois are open 6 a.m. to 7 p.m., local time. Registration status, polling place and sample ballot information for Illinois are on the official federal voter page: vote.gov.
What is on the ballot nationally on November 3, 2026
Last updated September 7, 2026.
Data last checked September 7, 2026.
Illinois results on election night
Illinois posts its own returns. Unofficial numbers appear on election night and certified results follow in the weeks after. Reach the Illinois election office through the Election Assistance Commission state directory, or through the official federal voter page for Illinois at vote.gov.
Numbers reported on election night are unofficial. Every state certifies its results on its own schedule, taking days to weeks. Provisional ballots are still being reviewed during that period, and states that accept mail ballots postmarked by election day are still receiving them. Margins in close races move after November 3.