Ohio - Constructed - 1840–1849
| Adams-Gray House |
| Adams Street Double House |
| Alkire House |
| Avery-Hunter House |
| Buchwalter House-Applethorpe Farm |
| Burt, William, House |
| Dublin Christian Church |
| Empire House |
| Holy Angels Church |
| Landes, Samuel, House |
| Lane's Mill Historic Buildings |
| Lockington Covered Bridge |
| McPherson Town Historic District |
| Rich, Charles B., House |
| South Salem Academy |
| St. James Episcopal Church |
| St. Peter-In-Chains Cathedral |
| Sutton House |
| Thompson Farm |
| Tuttle House |
| Ulyatt, Abraham, House |
| Waynesville Greek Revival Houses |
| West Sister Island Light |
| Whitehall Farm |
| Yeager, John J., House |
Data from United States Park Service and Wikidata
