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County in Illinois

Clinton County

About 37,000 people, median household income $86,600.

District lines run through Clinton County, so who represents you here depends on where you live. Search your address to see yours.

Who lives in Clinton County

Census survey estimates for 2020 to 2024, rounded.

People

Population
37,000
Median age
41.5 years
Under 18
22%
65 and over
19%
Veterans, of adults
9%
Speak another language at home
4%

Race and ethnicity

Hispanic or Latino, of any race
4%
White, not Hispanic
90%
Black, not Hispanic
3%
Asian, not Hispanic
1%

Income and housing

Median household income
$86,600
Below the poverty line
7%
Bachelor's or higher, adults 25+
26%
Owner-occupied homes
80%
Median home value
$192,000

2024 vote for president

Donald Trump, Republican
74.9%
Kamala Harris, Democrat
23.1%
Other candidates
2.0%

Votes counted, by precinct. Source: MIT Election Data and Science Lab, precinct returns (public domain).

Represent all of Clinton County

Clinton County's districts

Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, 119th Congressional District and 2024 state legislative district tabulation. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Towns (16)

Cities, villages and unincorporated communities, with the number of people in the county’s part of each at the 2020 Census.

Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, Demographic and Housing Characteristics. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.