DuPage County, Illinois
What we have for DuPage County today, and what is coming.
Basics
- County code (FIPS): 17043
- Land area: 328 square miles
- Population: 932,877
Federal money spent here
Fiscal year 2026: $9.1 billion in federal contracts, grants, loans and other awards for work done in DuPage County.
Who represents DuPage County
U.S. Senate (whole state): Richard J. Durbin (Democrat), Tammy Duckworth (Democrat).
U.S. House districts that include part of this county
| District | Member | Share of county land |
|---|---|---|
| Congressional District 3 | Delia C. Ramirez (Democrat) | 30.2% |
| Congressional District 6 | Sean Casten (Democrat) | 26.6% |
| Congressional District 11 | Bill Foster (Democrat) | 23.9% |
| Congressional District 8 | Raja Krishnamoorthi (Democrat) | 15.4% |
| Congressional District 4 | Jesús G. "Chuy" García (Democrat) | 4% |
State senate districts
| District | Member | Share of county land |
|---|---|---|
| State Senate District 24 | Seth Lewis (Republican) | 23.3% |
| State Senate District 23 | Suzy Glowiak Hilton (Democratic) | 17% |
| State Senate District 41 | John Curran (Republican) | 17% |
| State Senate District 21 | Laura Ellman (Democratic) | 15.9% |
| State Senate District 25 | Karina Villa (Democratic) | 15.5% |
| State Senate District 39 | Don Harmon (Democratic) | 3.4% |
| State Senate District 42 | Linda Holmes (Democratic) | 3.3% |
| State Senate District 4 | Kimberly Lightford (Democratic) | 1.7% |
| State Senate District 33 | Don DeWitte (Republican) | 1.3% |
| State Senate District 28 | Laura Murphy (Democratic) | 0.9% |
| State Senate District 43 | Rachel Ventura (Democratic) | 0.6% |
State house / assembly districts
| District | Member | Share of county land |
|---|---|---|
| State House District 49 | Maura Hirschauer (Democratic) | 14.6% |
| State House District 47 | Amy Grant (Republican) | 14.2% |
| State House District 42 | Margaret DeLaRosa (Democratic) | 9.3% |
| State House District 48 | Jennifer Sanalitro (Republican) | 9.1% |
| State House District 81 | Anne Stava (Democratic) | 9.1% |
| State House District 45 | Marti Deuter (Democratic) | 8.7% |
| State House District 46 | Diane Blair-Sherlock (Democratic) | 8.4% |
| State House District 82 | Nicole La Ha (Republican) | 7.9% |
| State House District 41 | Janet Yang Rohr (Democratic) | 6.7% |
| State House District 77 | Norma Hernandez (Democratic) | 3.4% |
| State House District 84 | Stephanie Kifowit (Democratic) | 3.3% |
| State House District 7 | Chris Welch (Democratic) | 1.7% |
| State House District 65 | Dan Ugaste (Republican) | 1.3% |
| State House District 50 | Barbara Hernandez (Democratic) | 0.9% |
| State House District 56 | Michelle Mussman (Democratic) | 0.9% |
| State House District 85 | Dee Avelar (Democratic) | 0.6% |
Matched by district number using the U.S. Census Bureau 2020 county–district relationship files (land area overlap; districts may have been redrawn since). Your exact district depends on your address: U.S. House · state legislators.
County government
Find the official county website and contacts in the USA.gov local government directory or the National Association of Counties explorer.
Coming next for counties: county commission meetings and agendas, county budgets, local ballot measures and election results. We add each one as soon as a public, reliable feed exists for it. Know a good source? Tell us.
Sources: U.S. Census Bureau Gazetteer (county list, public domain); USAspending.gov (U.S. Treasury). Built 2026-11-03 15:28.