Clinton County, IL has a population of 37,858 people with a median age of 40.1 and a median household income of $63,929. Between 2015 and 2016 the population of Clinton County, IL declined from 37,929 to 37,858, a 0.19% decrease and its median household income grew from $63,236 to $63,929, a 1.1% increase.
The population of Clinton County, IL is 91.6% White, 3.36% Black, and 3.05% Hispanic. 3.81% of the people in Clinton County, IL speak a non-English language, and 99% are U.S. citizens.
The largest universities in Clinton County, IL are Kaskaskia College, with 1,711 graduates, N/A, with N/A graduates, and N/A, with N/A graduates.
The median property value in Clinton County, IL is $141,200, and the homeownership rate is 82.4%. Most people in Clinton County, IL commute by Drove Alone, and the average commute time is 24.5 minutes. The average car ownership in Clinton County, IL is 2 cars per household.
Clinton County, IL is the 38th most populated county in Illinois and borders Bond County, IL; Fayette County, IL; Madison County, IL; Marion County, IL; St. Clair County, IL; and Washington County, IL& 1 more.