McHenry County, Illinois
What we have for McHenry County today, and what is coming.
Basics
- County code (FIPS): 17111
- Land area: 603 square miles
- Population: 310,229
Federal money spent here
Fiscal year 2026: $2.1 billion in federal contracts, grants, loans and other awards for work done in McHenry County.
Who represents McHenry 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 11 | Bill Foster (Democrat) | 48.9% |
| Congressional District 16 | Darin LaHood (Republican) | 22% |
| Congressional District 10 | Bradley Scott Schneider (Democrat) | 21.4% |
| Congressional District 9 | Janice D. Schakowsky (Democrat) | 7.7% |
State senate districts
| District | Member | Share of county land |
|---|---|---|
| State Senate District 35 | Dave Syverson (Republican) | 62.8% |
| State Senate District 32 | Craig Wilcox (Republican) | 32% |
| State Senate District 26 | Darby Hills (Republican) | 2.7% |
| State Senate District 33 | Don DeWitte (Republican) | 2.5% |
State house / assembly districts
| District | Member | Share of county land |
|---|---|---|
| State House District 69 | Joe Sosnowski (Republican) | 61.8% |
| State House District 63 | Steve Reick (Republican) | 20.7% |
| State House District 64 | Tom Weber (Republican) | 11.3% |
| State House District 52 | Marty McLaughlin (Republican) | 2.7% |
| State House District 66 | Suzanne Ness (Democratic) | 2.5% |
| State House District 70 | Jeff Keicher (Republican) | 1% |
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.
Sources: U.S. Census Bureau Gazetteer (county list, public domain); USAspending.gov (U.S. Treasury). Built 2026-11-03 15:28.