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Sex Offender Registry — Illinois
The official sex offender registry for Illinois is maintained by the state. Search it directly — it is free and updated by law enforcement. Registry information may not be used to threaten, intimidate or harass anyone.
🔒 Official sex offender registry sources in Illinois
| Official registry | Illinois Sex Offender Registry (Illinois State Police) Source: sor.isp.illinois.gov ↗ |
Sex Offender Registry by County
Adams County
Pop. 64,109
Alexander County
Pop. 4,594
Bond County
Pop. 16,576
Boone County
Pop. 53,313
Brown County
Pop. 6,307
Bureau County
Pop. 32,486
Calhoun County
Pop. 4,224
Carroll County
Pop. 15,444
Cass County
Pop. 12,713
Champaign County
Pop. 212,374
Christian County
Pop. 33,247
Clark County
Pop. 15,076
Clay County
Pop. 12,821
Clinton County
Pop. 37,087
Coles County
Pop. 46,423
Cook County
Pop. 5,182,617
Crawford County
Pop. 18,388
Cumberland County
Pop. 10,305
De Witt County
Pop. 15,319
DeKalb County
Pop. 101,335
Douglas County
Pop. 19,824
DuPage County
Pop. 937,142
Edgar County
Pop. 16,398
Edwards County
Pop. 5,984
Effingham County
Pop. 34,602
Fayette County
Pop. 21,157
Ford County
Pop. 13,451
Franklin County
Pop. 37,033
Fulton County
Pop. 32,510
Gallatin County
Pop. 4,690
Greene County
Pop. 11,417
Grundy County
Pop. 53,835
Hamilton County
Pop. 7,818
Hancock County
Pop. 17,008
Hardin County
Pop. 3,550
Henderson County
Pop. 6,048
Henry County
Pop. 48,177
Iroquois County
Pop. 26,067
Jackson County
Pop. 53,199
Jasper County
Pop. 9,092
Jefferson County
Pop. 36,107
Jersey County
Pop. 21,150
Jo Daviess County
Pop. 21,528
Johnson County
Pop. 13,320
Kane County
Pop. 520,997
Kankakee County
Pop. 106,410
Kendall County
Pop. 143,171
Knox County
Pop. 48,716
LaSalle County
Pop. 108,390
Lake County
Pop. 718,604
Lawrence County
Pop. 14,801
Lee County
Pop. 33,544
Livingston County
Pop. 35,375
Logan County
Pop. 27,518
Macon County
Pop. 100,737
Macoupin County
Pop. 43,895
Madison County
Pop. 263,017
Marion County
Pop. 36,437
Marshall County
Pop. 11,552
Mason County
Pop. 12,543
Massac County
Pop. 13,627
McDonough County
Pop. 26,662
McHenry County
Pop. 315,959
McLean County
Pop. 172,069
Menard County
Pop. 11,963
Mercer County
Pop. 15,292
Monroe County
Pop. 34,969
Montgomery County
Pop. 27,615
Morgan County
Pop. 32,618
Moultrie County
Pop. 14,365
Ogle County
Pop. 51,345
Peoria County
Pop. 179,630
Perry County
Pop. 20,272
Piatt County
Pop. 16,628
Pike County
Pop. 14,258
Pope County
Pop. 3,703
Pulaski County
Pop. 4,879
Putnam County
Pop. 5,633
Randolph County
Pop. 29,903
Richland County
Pop. 15,362
Rock Island County
Pop. 142,731
Saline County
Pop. 22,826
Sangamon County
Pop. 194,345
Schuyler County
Pop. 6,750
Scott County
Pop. 4,880
Shelby County
Pop. 20,542
St. Clair County
Pop. 251,149
Stark County
Pop. 5,272
Stephenson County
Pop. 43,088
Tazewell County
Pop. 129,821
Union County
Pop. 16,886
Vermilion County
Pop. 71,106
Wabash County
Pop. 10,979
Warren County
Pop. 16,217
Washington County
Pop. 13,535
Wayne County
Pop. 15,928
White County
Pop. 13,395
Whiteside County
Pop. 54,657
Will County
Pop. 708,583
Williamson County
Pop. 67,064
Winnebago County
Pop. 283,790
Woodford County
Pop. 38,290