This is a list of the National Register of Historic Places listings in Seneca County, Ohio.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Seneca County, Ohio, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map.

There are 45 properties and districts listed on the National Register in the county. Another property was once listed but has been removed.


          This National Park Service list is complete through NPS recent listings posted April 4, 2025.

Current listings

Former listing

See also

  • List of National Historic Landmarks in Ohio
  • Listings in neighboring counties: Crawford, Hancock, Huron, Sandusky, Wood, Wyandot
  • National Register of Historic Places listings in Ohio

References


Seneca County Historical Society Home

National Register of Historic Places listings in Ohio Wikipedia

Seneca County Ohio 1891 Old Map Reprint OLD MAPS

Seneca County Ohio 1864 Old Wall Map Reprint With Homeowner Etsy

Seneca County Ohio 1891 Old Wall Map Reprint With Homeowner Etsy