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Jersey County

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

Article

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.