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One of the fifty states

Illinois

Your guide to Illinois in Congress. Find the people who represent the state and the official information behind their records.

Roster checked Sep 28, 2026Sources linked below
SpringfieldState capital
12,719,1412025 population estimate
19Serving congressional members

U.S. senators

View Senate delegation

2 members listed

Portrait of Richard J. Durbin

Richard J. Durbin

Illinois · U.S. SenateDemocrat
Portrait of Tammy Duckworth

Tammy Duckworth

Illinois · U.S. SenateDemocrat

House representatives

View House delegation

17 members listed

Portrait of Bill Foster

Bill Foster

Illinois · District 11Democrat
Portrait of Bradley Scott Schneider

Bradley Scott Schneider

Illinois · District 10Democrat
Portrait of Danny K. Davis

Danny K. Davis

Illinois · District 7Democrat
Portrait of Darin LaHood

Darin LaHood

Illinois · District 16Republican
Portrait of Delia C. Ramirez

Delia C. Ramirez

Illinois · District 3Democrat
Portrait of Eric Sorensen

Eric Sorensen

Illinois · District 17Democrat
Portrait of Janice D. Schakowsky

Janice D. Schakowsky

Illinois · District 9Democrat
Portrait of Jesús G. "Chuy" García

Jesús G. "Chuy" García

Illinois · District 4Democrat
Portrait of Jonathan L. Jackson

Jonathan L. Jackson

Illinois · District 1Democrat
Portrait of Lauren Underwood

Lauren Underwood

Illinois · District 14Democrat
Portrait of Mary E. Miller

Mary E. Miller

Illinois · District 15Republican
Portrait of Mike Bost

Mike Bost

Illinois · District 12Republican
Portrait of Mike Quigley

Mike Quigley

Illinois · District 5Democrat
Portrait of Nikki Budzinski

Nikki Budzinski

Illinois · District 13Democrat
Portrait of Raja Krishnamoorthi

Raja Krishnamoorthi

Illinois · District 8Democrat
Portrait of Robin L. Kelly

Robin L. Kelly

Illinois · District 2Democrat
Portrait of Sean Casten

Sean Casten

Illinois · District 6Democrat

Historical Illinois profiles

Selected former congressional roles preserved in our records. Some people now serve in another chamber. This is not a complete list of everyone who has represented Illinois.

Explore the historical congressional archive for records from other states.

Sources & methodology

  1. United States Congress legislators dataset ↗
    unitedstates / GovTrack contributors — Biographical details, terms, official contact details and committees
  2. Vintage 2025 state population estimates ↗
    U.S. Census Bureau — July 1, 2025 population estimates for states, DC and Puerto Rico

Dates and coverage differ by source. How we use this data · Suggest a correction