National Register of Historic Places listings in Ohio

4,295 listings 670 districts 77 National Historic Landmarks 3,637 with nomination summaries 3,274 with photos

Ohio has 4,295 properties, districts, sites, structures and objects on the National Register, listed between 1966 and 2026. Each page below links to the official nomination document, shows the location on a map and, where the nomination has been scanned, a plain-English summary of why it was listed. To check a specific address, use the address lookup.

By county

Listings per decade

Source: NPS National Register database. Most listings date from the 1970s–80s survey boom.

State Historic Preservation Office

Ohio State Historic Preservation Office handles nominations and tax-credit certifications. State tax credits · How to nominate.

Most notable listings in Ohio

Notable historic districts

Guides for owners and visitors

Data: NPS National Register database (snapshot May 2026), NPS cultural-resource GIS, National Archives, Wikidata and Wikimedia Commons. Details and licences.