Douglas County, Illinois

Douglas County is a county in Illinois with an estimated population of 19,629 in 2023. 7 cities, towns and Census places in it are indexed here.

Largest places in Douglas County

About Douglas County

Douglas County is one of the counties of Illinois. County governments in Illinois handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.