In 2020, Clinton County, IL had a population of 37.5k people with a median age of 40.6 and a median household income of $67,179. Between 2019 and 2020 the population of Clinton County, IL declined from 37,634 to 37,549, a −0.226% decrease and its median household income grew from $66,639 to $67,179, a 0.81% increase.
The 5 largest ethnic groups in Clinton County, IL are White (Non-Hispanic) (91.1%), Black or African American (Non-Hispanic) (3.24%), White (Hispanic) (2.13%), Two+ (Non-Hispanic) (1.73%), and Other (Hispanic) (0.591%).
None of the households in Clinton County, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99% of the residents in Clinton County, IL are U.S. citizens.
The largest universities in Clinton County, IL are Kaskaskia College (819 degrees awarded in 2020).
In 2020, the median property value in Clinton County, IL was $145,700, and the homeownership rate was 79.6%.
Most people in Clinton County, IL drove alone to work, and the average commute time was 25.9 minutes. The average car ownership in Clinton County, IL was 2 cars per household.
Clinton County, IL borders Bond County, IL, Fayette County, IL, Madison County, IL, Marion County, IL, St. Clair County, IL, and Washington County, IL.