In 2018, Douglas County, IL had a population of 19.7k people with a median age of 37.9 and a median household income of $54,218. Between 2017 and 2018 the population of Douglas County, IL declined from 19,830 to 19,714, a -0.585% decrease and its median household income grew from $52,261 to $54,218, a 3.74% increase.
The 5 largest ethnic groups in Douglas County, IL are White (Non-Hispanic) (90.4%), White (Hispanic) (5.91%), Asian (Non-Hispanic) (0.73%), Two+ (Hispanic) (0.563%), and Black or African American (Non-Hispanic) (0.533%). 0% of the households in Douglas County, IL speak a non-English language at home as their primary language, and 98.2% of the residents in Douglas County, IL are U.S. citizens.
In 2018, the median property value in Douglas County, IL was $106,500, and the homeownership rate was 71.7%. Most people in Douglas County, IL drove alone to work, and the average commute time was 19.5 minutes. The average car ownership in Douglas County, IL was 2 cars per household.