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.

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Facts from Wikidata (CC0). Image by Calvin Beale via Wikimedia Commons (Public domain).

Jersey County

county in Illinois, United States

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About Jersey County

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Country: United States

Facts from Wikidata (CC0). Image by Calvin Beale via Wikimedia Commons (Public domain).

Inception

February 28, 1839

Website

http://www.jerseycounty-il.us

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Jerseyville United States Illinois

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