List of National Historic Landmarks in Illinois

There are 86 National Historic Landmarks in Illinois, including Eads Bridge, which spans into Missouri and which the National Park Service credits to Missouri's National Historic Landmark list. Also included are two sites that were once National Historic Landmarks before having their designations removed. All National Historic Landmarks are listed on the National Register of Historic Places.

List of National Historic Landmarks in Illinois

There are 86 National Historic Landmarks in Illinois, including Eads Bridge, which spans into Missouri and which the National Park Service credits to Missouri's National Historic Landmark list. Also included are two sites that were once National Historic Landmarks before having their designations removed. All National Historic Landmarks are listed on the National Register of Historic Places.