In 2019, Douglas County, IL had a population of 19.6k people with a median age of 37.8 and a median household income of $56,714. Between 2018 and 2019 the population of Douglas County, IL declined from 19,714 to 19,623, a −0.462% decrease and its median household income grew from $54,218 to $56,714, a 4.6% increase.
The 5 largest ethnic groups in Douglas County, IL are White (Non-Hispanic) (90.3%), White (Hispanic) (5.5%), Other (Hispanic) (0.734%), Two+ (Hispanic) (0.703%), and Black or African American (Non-Hispanic) (0.688%). 0% of the households in Douglas County, IL speak a non-English language at home as their primary language.
98.1% of the residents in Douglas County, IL are U.S. citizens.
In 2019, the median property value in Douglas County, IL was $111,400, and the homeownership rate was 74%. Most people in Douglas County, IL drove alone to work, and the average commute time was 19.4 minutes. The average car ownership in Douglas County, IL was 2 cars per household.