In 2020, Warren County, IL had a population of 17k people with a median age of 39.8 and a median household income of $54,291. Between 2019 and 2020 the population of Warren County, IL declined from 17,146 to 16,981, a −0.962% decrease and its median household income grew from $50,310 to $54,291, a 7.91% increase.
The 5 largest ethnic groups in Warren County, IL are White (Non-Hispanic) (83%), White (Hispanic) (4.81%), Black or African American (Non-Hispanic) (4%), Other (Hispanic) (3.78%), and Asian (Non-Hispanic) (1.25%).
None of the households in Warren 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.
97% of the residents in Warren County, IL are U.S. citizens.
The largest universities in Warren County, IL are Monmouth College (229 degrees awarded in 2020).
In 2020, the median property value in Warren County, IL was $86,900, and the homeownership rate was 75.4%. Most people in Warren County, IL drove alone to work, and the average commute time was 19.7 minutes. The average car ownership in Warren County, IL was 2 cars per household.