Douglas County
Also known as Douglas County, Illinois, Douglas County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Stephen A. Douglas
- Seat
- Tuscola
- Largest city
- Tuscola
- Total
- 417 sq mi (1,080 km )
- Land
- 416 sq mi (1,080 km )
- Water
- 0.6 sq mi (1.6 km ) 0.1%
- Estimate 2025
- 19,880
- Density
- 47.8/sq mi (18.5/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
Article
Douglas County is a county located in the U.S. state of Illinois. As of the 2020 United States census, the population was 19,740. The county seat is Tuscola.
History