Sangamon County
Also known as Sangamon County, Illinois, Sangamon County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Sangamon River
- Seat
- Springfield
- Largest city
- Springfield
- Total
- 877 sq mi (2,270 km )
- Land
- 868 sq mi (2,250 km )
- Water
- 8.7 sq mi (23 km ) 1.0%
- Estimate 2025
- 194,170
- Density
- 226/sq mi (87.3/km )
- Congressional districts
- 13th , 15th
- Website
- www .co .sangamon .il .us
via Wikipedia infobox
Wikidata facts
Article
Sangamon County is a county located near the center of the U.S. state of Illinois. According to the 2020 census, it had a population of 196,343. Its county seat and largest city is Springfield, the state capital.
Sangamon County is included in the Springfield, IL Metropolitan Statistical Area.