Illinois Counties Sex Offender Registry
Illinois has 102 counties total. The 87 counties listed below each have a population over 10,000 and maintain sex offender tracking through their sheriff offices. Most use the Illinois State Police registry or OffenderWatch to monitor sex offenders. Select a county to find local sex offender resources, sheriff contact info, and search tools.
Adams County
Bond County
Boone County
Bureau County
Carroll County
Cass County
Champaign County
Christian County
Clark County
Clay County
Clinton County
Coles County
Cook County
Crawford County
Cumberland County
DeKalb County
De Witt County
Douglas County
DuPage County
Edgar County
Effingham County
Fayette County
Ford County
Franklin County
Fulton County
Greene County
Grundy County
Hancock County
Henry County
Iroquois County
Jackson County
Jefferson County
Jersey County
Jo Daviess County
Johnson County
Kane County
Kankakee County
Kendall County
Knox County
Lake County
LaSalle County
Lawrence County
Lee County
Livingston County
Logan County
Macon County
Macoupin County
Madison County
Marion County
Marshall County
Mason County
Massac County
McDonough County
McHenry County
McLean County
Menard County
Mercer County
Monroe County
Montgomery County
Morgan County
Moultrie County
Ogle County
Peoria County
Perry County
Piatt County
Pike County
Randolph County
Richland County
Rock Island County
Saline County
Sangamon County
Shelby County
St. Clair County
Stephenson County
Tazewell County
Union County
Vermilion County
Wabash County
Warren County
Washington County
Wayne County
White County
Whiteside County
Williamson County
Will County
Winnebago County
Woodford County