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Marion County, Illinois

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Marion County, Illinois
Marion County Courthouse in Salem — Public domain, Nyttend · source

About Marion County

Marion County is a county located in the U.S. state of Illinois, in the southern half of the state known as "Little Egypt". According to the 2020 census, it had a population of 37,729. Its county seat is Salem. Marion County comprises the Centralia, IL Micropolitan Statistical Area, which is included in the St. Louis-St. Charles-Farmington, MO-IL Combined Statistical Area.

Description adapted from Wikipedia, CC BY-SA 4.0.

Marion County at a glance

County seat
Salem
Population
37,729 (2020)
Land area
572 sq mi
Founded
1823

Largest communities in Marion County

  1. Centralia Township14,319
  2. Centralia12,182
  3. Salem Township9,112
  4. Salem County seat7,282
  5. Sandoval Township2,208

History of Marion County

Marion County was organized on January 24, 1823, from portions of Jefferson and Fayette counties. It was named in honor of Revolutionary War Gen. Francis Marion, the "Swamp Fox".

Adapted from Wikipedia, CC BY-SA 4.0.

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  1. 01

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  2. 02

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Official channels

Marion County election resources

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Neighboring counties

Part of Illinois Voter Check

This is the Marion 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 Marion County or the Illinois State Board of Elections publishes, they are right and this page is not.