This is a private reference site, not a Williamson County government office. We cannot confirm whether someone is in custody, confirm a release, post bond, pull official booking records, or retrieve court records for you. Use the official office that maintains the record you need.
Where to Direct Williamson County Record Questions
For local custody questions, start with the Williamson County Sheriff's Office and jail. For filed charges, case numbers, docket entries, or certified court records after an arrest, use the Williamson County Circuit Clerk or the Judici case-search path linked by the clerk.
Williamson County Sheriff's Office and Jail
| Sheriff | Jeff Diederich |
|---|---|
| Address | 404 N. Van Buren Street, Marion, IL 62959 |
| Main phone | 618-997-6541 |
| Inspection-listed jail phone | 618-997-1916 |
| wcsheriff@wcsheriff.com | |
| Records Unit hours | Monday-Friday, 8:00 a.m. to 4:00 p.m., according to the researched official records-unit listing. |
| FOIA mail block | Williamson County Sheriff's Office, C/O: FOIA Officer, 404 N. Van Buren St., Marion, IL 62959. |
Williamson County Circuit Clerk
| Circuit Clerk | Kristen Bayer |
|---|---|
| Courthouse | 200 W. Jefferson Street, Marion, IL 62959 |
| Main phone | 618-997-1301 |
| Records request email | records-backgroundrequest@williamsoncountycc.org |
| Office hours | Monday-Friday, 8:00 a.m. to 4:00 p.m. |
| Useful divisions | Criminal misdemeanor ext. 3435, traffic ext. 3426, expungements ext. 3432, order of protection ext. 3440, law/miscellaneous remedy ext. 3429. |
Use this routing list before calling or sending a request:
- For someone believed to be in Williamson County Jail, use jail inmate records and then contact the sheriff or jail directly.
- For booking photographs, use jail roster mugshots and ask the sheriff FOIA officer for the booking photograph tied to the arrest.
- For filed charges, docket entries, and case status, use court records after a jail arrest, Judici, or the Circuit Clerk records email.
- For facility-specific questions, use the pages for Williamson County Jail or FCI Marion.
- For a sentenced Illinois prisoner, use the Illinois Department of Corrections Individual in Custody Search rather than the county jail.
- For a federal inmate or immigration detainee, use the BOP inmate locator or ICE Online Detainee Locator System. FCI Marion questions should go through BOP, not the county jail.