Warren County, IL has a population of 17,611 people with a median age of 39.9 and a median household income of $44,067. Between 2015 and 2016 the population of Warren County, IL declined from 17,701 to 17,611, a 0.51% decrease and its median household income grew from $43,699 to $44,067, a 0.84% increase.
The population of Warren County, IL is 84.9% White, 9.1% Hispanic, and 2.76% Black. 9.7% of the people in Warren County, IL speak a non-English language, and 94.9% are U.S. citizens.
The largest universities in Warren County, IL are Monmouth College, with 314 graduates, N/A, with N/A graduates, and N/A, with N/A graduates.
The median property value in Warren County, IL is $82,500, and the homeownership rate is 74.1%. Most people in Warren County, IL commute by Drove Alone, and the average commute time is 18.3 minutes. The average car ownership in Warren County, IL is 2 cars per household.
Warren County, IL is the 62nd most populated county in Illinois and borders Fulton County, IL; Henderson County, IL; Knox County, IL; McDonough County, IL; and Mercer County, IL.