Registered sex offenders in Williamson County, IL
172 people on the Illinois registry list an address in Williamson County, as of our last check of the official registry on October 22, 2026.
Open the Williamson County map Family safety tips
By registry category
| Category (as listed by ISP) | People |
|---|---|
| Child Sex Offender | 159 |
| Adult Sex Offender | 13 |
| Listed as non-compliant with registration | 10 |
Towns in Williamson County
Marion 70Herrin 36Carterville 19Johnston City 12Carbondale 7Colp 4Pittsburg 4Hurst 4Creal Springs 4Desoto 1Makanda 1Centralia 1Carrier Mills 1West Frankfort 1
ZIP codes
62959629486291862951629016292162922629496297462915629246290262801628416289562917
Questions
How many registered sex offenders live in Williamson County, Illinois?
172 people on the Illinois State Police registry list an address in Williamson County as of October 22, 2026.
How can I see where they are on a map?
Open the free map and search any address, town or ZIP code. It lists everyone on the registry within the distance you pick, nearest first, with photos and approximate locations.
How current is this information?
We check our copy against the official Illinois State Police registry regularly; the last check was October 22, 2026. Registry information changes often and can be wrong, so always confirm with the official registry at isp.illinois.gov/Sor.
Can I get notified when someone moves near Williamson County?
The Illinois State Police offers free email notifications on its registry site. NearbyOffenders.com's free email alerts for one address are launching soon; you can join the list.
Counts come from the Illinois State Police public sex offender registry and are grouped by the city each registrant lists, which may not match city limits. Registry information can be out of date or wrong; always confirm with the official registry at isp.illinois.gov/Sor. Registrants under 18 are not shown. NearbyOffenders.com is independent and not affiliated with the Illinois State Police or any government agency. Using registry information to harass or threaten anyone is against the law. Terms & Privacy