Registered sex offenders in Cook County, IL
6,452 people on the Illinois registry list an address in Cook County, as of our last check of the official registry on October 22, 2026.
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By registry category
| Category (as listed by ISP) | People |
|---|---|
| Child Sex Offender | 4,949 |
| Adult Sex Offender | 1,370 |
| Murderer | 133 |
| Listed as non-compliant with registration | 1,676 |
Towns in Cook County
Chicago 4292Harvey 104Calumet City 89Cicero 79Lansing 59Des Plaines 58Oak Lawn 54Dolton 49Chicago Heights 48Maywood 48Skokie 46Calumet Park 43Palatine 41Sauk Village 39Robbins 38Melrose Park 37Markham 37Riverdale 37Blue Island 36Bellwood 35Matteson 32Midlothian 31Berwyn 30Alsip 28Evanston 28Lyons 28Wheeling 28Bridgeview 27Schaumburg 26Hazel Crest 25Broadview 24Streamwood 24Tinley Park 23Worth 22Elmwood Park 22Richton Park 22Orland Park 21Park Forest 19Homewood 19Lynwood 18Arlington Heights 17Oak Park 17Brookfield 17Franklin Park 17Stickney 17Hanover Park 16Glenwood 16Forest Park 15Mount Prospect 14Country Club Hills 14Burbank 14Chicago Ridge 13Westchester 13Northlake 13Oak Forest 13Evergreen Park 13Rolling Meadows 12Hoffman Estates 12Stone Park 11Elgin 11Burnham 11Berkeley 11Crestwood 11Steger 11Niles 11Lemont 11Posen 10Park Ridge 10Glenview 10Ford Heights 9Dixmoor 9Schiller Park 9Phoenix 9River Grove 8Summit 8Buffalo Grove 8Bartlett 7Hillside 7Norridge 7Justice 7Palos Hills 7Countryside 6Harwood Heights 6Palos Heights 6South Holland 6Hickory Hills 6Northbrook 6Palos Park 6Lagrange 5Rosemont 4Thornton 4Willow Springs 4Hometown 3Lagrange Park 3Prospect Heights 3Inverness 3Flossmoor 3North Riverside 3Crest Hill 1Roselle 1S Chicago Heights 1Chester 1Deerfield 1Barrington 1
ZIP codes
60628606216061960617606086062060636606246041160643606236042660649606296060960651606396040960827606326064460804606416063760438606126063460453601536064760419606386061860652604026001660472606256040660104606306070760445606406016060443604786009060455605346080360074604286066060107604296007660018601556047160004600776048260626606536061660622604306006760462604666047760633601306013160164601336042560005604596051360613606156020260525606576000860056602016041560645606596015460302606076070660805610216012060163601656016960418604396045260475606056006860610606556065660714600076017360176606146002560070600896017160193604696050160103601626045860487601946046360464604656047360601606116006260457604676030460422606426064660141604566047660480605266054660604606316065460010617646280160015600646008560098601726017460417604236049060559615206183462233622596227462454624666270362995
Questions
How many registered sex offenders live in Cook County, Illinois?
6,452 people on the Illinois State Police registry list an address in Cook 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 Cook 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