Registered sex offenders in McHenry County, IL
350 people on the Illinois registry list an address in McHenry County, as of our last check of the official registry on October 22, 2026.
Open the McHenry County map Family safety tips
By registry category
| Category (as listed by ISP) | People |
|---|---|
| Child Sex Offender | 320 |
| Adult Sex Offender | 29 |
| Murderer | 1 |
| Listed as non-compliant with registration | 19 |
Towns in McHenry County
Crystal Lake 56McHenry 50Woodstock 50Harvard 31Wonder Lake 31Algonquin 20Marengo 16Cary 15Lake in the Hills 9Richmond 9Huntley 8Hebron 8Island Lake 7Fox River Grove 6Lakewood 5Spring Grove 5McCullom Lake 4Johnsburg 4Prairie Grove 3Lakemoor 1
ZIP codes
600146009860050600336009760051601026015260013601566001260071600346014260042600216008160010
Questions
How many registered sex offenders live in McHenry County, Illinois?
350 people on the Illinois State Police registry list an address in McHenry 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 McHenry 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 Registry information can be out of date or wrong; always confirm with the official registry at isp.illinois.gov/Sor.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