In 2021, Clinton County, IL had a population of 37k people with a median age of 41.2 and a median household income of $72,468. Between 2020 and 2021 the population of Clinton County, IL declined from 37,549 to 37,048, a −1.33% decrease and its median household income grew from $67,179 to $72,468, a 7.87% increase.
The 5 largest ethnic groups in Clinton County, IL are White (Non-Hispanic) (90.9%), Black or African American (Non-Hispanic) (3.32%), Two+ (Non-Hispanic) (1.83%), Two+ (Hispanic) (1.62%), and White (Hispanic) (1.1%).
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.
98.7% of the residents in Clinton County, IL are U.S. citizens.
The largest universities in Clinton County, IL are Kaskaskia College (937 degrees awarded in 2021).
In 2021, the median property value in Clinton County, IL was $152,900, and the homeownership rate was 79.7%.
Most people in Clinton County, IL drove alone to work, and the average commute time was 26 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.