File:Image_Greene_County_Courthouse.jpg · Wikimedia Commons · See Wikimedia Commons
Greene County
Sign in to saveAlso known as Greene County, Illinois, Greene County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Nathanael Greene
- Seat
- Carrollton
- Largest city
- Carrollton
- Total
- 546 sq mi (1,410 km )
- Land
- 543 sq mi (1,410 km )
- Water
- 3.3 sq mi (8.5 km ) 0.6%
- Estimate 2025
- 11,313
- Density
- 22.1/sq mi (8.52/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 15th
via Wikipedia infobox
Wikidata facts
- Population
- 11985
- Area
- 1415
- Official website
- www.greenecountyil.com
- Image
- Image Greene County Courthouse.jpg
- Households
- 4984
Show 5 more facts
- Commons category
- Greene County, Illinois
- inception
- 1821-00-00
- water as percent of area
- 0.6
- native label
- Greene County
- per capita income
- 27105
Sources (8)
via Wikidata · CC0
~8 min read
Article
Greene County is a county located in the U.S. state of Illinois. According to the 2020 United States census, it has a population of 11,843. Its county seat is Carrollton.
A notable archaeological area, the Koster Site, has produced evidence of more than 7,000 years of human habitation. Artifacts from the site are displayed at the Center for American Archeology in Kampsville, Illinois.
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