Effingham County
Also known as Effingham County, Illinois, Effingham County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Thomas Howard, 3rd Earl of Effingham
- Seat
- Effingham
- Largest city
- Effingham
- Total
- 480 sq mi (1,200 km )
- Land
- 479 sq mi (1,240 km )
- Water
- 1.2 sq mi (3.1 km ) 0.3%
- Estimate 2025
- 34,519
- Density
- 72.4/sq mi (27.9/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
Article
Effingham County is a county located in the south central part of the U.S. state Illinois. As of the 2020 census, the population was 34,668. Its county seat and largest city is Effingham. Some other cities in Effingham County, Illinois include Altamont, Teutopolis, Beecher City, Montrose, Dieterich, Shumway, Watson, Mason, and Edgewood. Effingham County comprises the Effingham, IL Micropolitan Statistical Area.
History