National Historical RegisterIndependent guide · not a government site

National Register listings in Mason County, Illinois

4 listings 0 districts 2 with nomination summaries Updated October 2026
Open in OpenStreetMap

Most notable listings

Havana Public Library Havana · Building · listed 1994 Havana Water Tower Havana · Structure · listed 1993 Rockwell Mound Havana · Site · listed 1987 Clear Lake Site Manito · Site · listed 1978

All listings

Places: Havana (3) · Manito (1)

NamePlaceTypeListed
Clear Lake Site Manito Site 1978
Havana Public Library Havana Building 1994
Havana Water Tower Havana Structure 1993
Rockwell Mound Havana Site 1987

State Historic Preservation Office

Nominations, tax-credit certifications and official records for Illinois go through the Illinois State Historic Preservation Office. See how to nominate a property.