Jersey County
Sign in to saveAlso known as Jersey County, Illinois, Jersey County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Founded
- February 28, 1839
- Named after
- New Jersey
- Seat
- Jerseyville
- Largest city
- Jerseyville
- Total
- 377 sq mi (980 km )
- Land
- 369 sq mi (960 km )
- Water
- 7.9 sq mi (20 km ) 2.1%
- Estimate 2025
- 21,160
- Density
- 58.3/sq mi (22.5/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 15th
- Website
- www .jerseycounty-il .us
via Wikipedia infobox
~12 min read
Encyclopedic overview
Jersey County is a county located in the U.S. state of Illinois. At the 2020 census, it had a population of 21,512. The county seat and largest community is Jerseyville, with a population of 8,337 in 2010. The county's smallest incorporated community is Otterville, with a population of 87.
Jersey County is included in the St. Louis, MO-IL Metropolitan Statistical Area.
Excerpted from Wikipedia’s “Jersey County” article, available under the CC BY-SA 4.0 licence.