Sheriff's Office - Williamson County

Jeff Diederich

Sheriff

Address: 404 North Van Buren St. Marion, IL 62959 Open in maps

Phone: (618) 997-6541

E-mail: wcsheriff@wcsheriff.com

Fax: 618-997-3405

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Last Updated:
March 27, 2025

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By mail, in person, or online - there are many ways to register to vote in Illinois. Register today: https://ova.elections.il.gov/

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If you need assistance or have inquiries regarding the Williamson County website, please contact us. For more information, please search our site or refer to our Departments listing for information on specific county services.

American Rescue Plan Act (ARPA)

Any Business, Non-Profit, Community Group, Neighborhood Association, County Department, or other entity wishing to be considered for funding must fully complete and submit this application. Download PDF

Emergency Preparation

The Williamson County Emergency Management Agency coordinates the plans and operations of all components of the emergency management system within the county. Visit Website

Williamson County, IL

Sheriff’s Office

Jeff Diederich

Sheriff

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7-21-2026...

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Williamson County