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Jersey County, Illinois

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Jersey County, Illinois
Jerseycourt — Public domain, Calvin Beale · source

About Jersey County

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.

Description adapted from Wikipedia, CC BY-SA 4.0.

Jersey County at a glance

County seat
Jerseyville
Population
21,512 (2020)
Land area
377 sq mi
Founded
1839

Largest communities in Jersey County

  1. Jersey Township9,995
  2. Jerseyville County seat8,337
  3. Piasa Township3,152
  4. Elsah Township2,194
  5. Mississippi Township1,785

History of Jersey County

Jersey County lies just northeast of where the great Mississippi and Illinois rivers meet. It is the former home of the Kickapoo, Menominee, Potawatomi, and Illiniwek Confederation Native Americans. The first European explorers to visit the area, Father Marquette and Louis Jolliet, arrived in 1673, where they encountered the fearsome painting of the Piasa bird. The present day Pere Marquette State Park, located near Grafton, is named in Father Marquette's honor, and a monument to him is located at the park. Jersey County was founded on February 28, 1839, and was formed out of Greene County. The county was named for the state of New Jersey, from which many of the early settlers emigrated - which was itself named for the Channel Island of Jersey in Great Britain. The area quickly evolved into several small agricultural communities.

Adapted from Wikipedia, CC BY-SA 4.0.

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  2. 02

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Official channels

Jersey County election resources

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Neighboring counties

Part of Illinois Voter Check

This is the Jersey County page of Illinois Voter Check, a project of True the Vote, pointing Illinois voters at the official tools that already exist — and at Scan Check Protect to verify your registration.

Where anything here differs from what Jersey County or the Illinois State Board of Elections publishes, they are right and this page is not.