National Register of Historic Places listings in Illinois
Wikimedia list article

This is a list of properties and districts in Illinois that are on the National Register of Historic Places. There are over 1,900 in total. Of these, 85 are National Historic Landmarks. There are listings in all of the state's 102 counties.
Numbers of listings by county
Adams County
Alexander County
Bond County
Boone County
Brown County
Former listing
Bureau County
Calhoun County
Carroll County
Cass County
Former listing
Champaign County
Christian County
Clark County
Clay County
Clinton County
Coles County
Cook County
Crawford County
Cumberland County
DeKalb County
DeWitt County
Douglas County
Former listing
DuPage County
Edgar County
Edwards County
Effingham County
Fayette County
Former listings
Ford County
Franklin County
Fulton County
Gallatin County
Greene County
Grundy County
Hamilton County
Hancock County
Hardin County
Henderson County
Henry County
Iroquois County
Jackson County
Jasper County
Jefferson County
Jersey County
Jo Daviess County
Johnson County
Kane County
Kankakee County
Kendall County
Knox County
LaSalle County
Lake County
Lawrence County
Lee County
Livingston County
Logan County
McDonough County
McHenry County
McLean County
Macon County
Macoupin County
Madison County
Marion County
Marshall County
Mason County
Massac County
Former listing
Menard County
Mercer County
Monroe County
Montgomery County
Morgan County
Moultrie County
Ogle County
Peoria County
Perry County
Piatt County
Pike County
Pope County
Pulaski County
Putnam County
Randolph County
Richland County
Rock Island County
St.
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