In 2017, Clay County, IL had a population of 13.4k people with a median age of 44 and a median household income of $47,427. Between 2016 and 2017 the population of Clay County, IL declined from 13,466 to 13,393, a -0.542% decrease and its median household income grew from $45,984 to $47,427, a 3.14% increase.
The 5 largest ethnic groups in Clay County, IL are White (Non-Hispanic) (96.4%), White (Hispanic) (1.41%), Asian (Non-Hispanic) (0.739%), Two or More Races (Non-Hispanic) (0.732%), and Black or African American (Non-Hispanic) (0.672%). N/A% of the people in Clay County, IL speak a non-English language, and 99.5% are U.S. citizens.
The median property value in Clay County, IL is $77,200, and the homeownership rate is 79.1%. Most people in Clay County, IL commute by Drove Alone, and the average commute time is 20 minutes. The average car ownership in Clay County, IL is 2 cars per household.