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County Court & Case Information

Phone: 618-997-1301 

Address: 200 West Jefferson, Suite 100 , Marion, Illinois 62959-2494 

Court Website

Williamson County County Court Cases


Find your Williamson County case information online.

About the County: Williamson County, Illinois was founded in 1839. The county was named after Hugh Williamson (1735–1819), delegate from North Carolina to the Philadelphia Convention. The Williamson County court complex is located in the county seat city of Marion.

Formed from portions of Franklin County, the county has a reported population of 66357 residents and comprises a total area of 424 square miles within the state of Illinois. In 2016, there was a reported unemployement rate of 8.9% in Williamson County. A total of 27434 tax returns were filed in 2015.

Williamson County Crime Case Data


The following cases of crime were recorded in the county in 2015:

  • Homicide/Murder: 3
  • Sexual Assault/Rape: 13
  • Battery & Assault: 28
  • Burglary: 205
  • Theft: 471
  • Vehicle Theft: 45
  • Arson 3
  • Drug-Related Cases / Offenses: 158

Williamson County Civil Cases

In 2013, the county processed at total of 419 marriages, and 215 divorce cases.

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