Ohio - Area of significance: Agriculture
| Lehman, Abraham, Farmhouse |
| Leppert, C., Barn |
| Leppert, C., Farm |
| Livingston, Alexander W., House |
| Lutz-Martin Farm |
| Malabar Farm |
| Marquart-Mercer Farm |
| Martin, Henry, Farm |
| McCafferty Run Farmstead |
| McDonald Farm |
| McKever, Lewis, Farmhouse |
| Medina Farmers Exchange Co. |
| Meeker, Forrest, House and Farm |
| Meigs County Fairgrounds, Grandstand and Racetrack |
| Michaels Farm |
| Miller-Bissell Farmstead |
| Miller Farm |
| Mount Victory Historic District |
| Ohmer, Nicholas, House |
| Oregon Historic District |
| Outville Hay and Grain Company Building |
| Overmyer-Waggoner-Roush Farm |
| Oviatt, Orson Minot, House |
| Packard-Doubler House |
| Peairs Homestead |
| Plainview Farm |
| Point, Nathaniel, Farm |
| Powell, Andrew, Homestead |
| Renick House, Paint Hill |
| Rings, Louis, Barn #1 |
| Rings, Louis, Barn #2 |
| Rings, Louis, Residence |
| Roas-Ilhardt Farm and Winery |
| Rock Hollow School |
| Round Barn |
| Round Barn |
| Round Barn |
| Round Barn |
| Round Barn |
| Rummell Mill |
| Saunders, Elizabeth Sheets, Farm |
| Savage-Stewart House |
| Scioto Grange No. 1234 |
| Scott, John, Barn and Granary |
| Sells, Benjamin, Barn #1 |
| Sells, Benjamin, Barn #2 |
| Sells, David, Barn |
| Shier, Carl H., Barn |
| Shier, Carl H., Chicken House |
| Shier, Carl H., House |
| Shull-Lugenbuhl Farm |
| Snow, Russ and Holland, Houses |
| Sollars Farmstead |
| Spring Hill |
| Staley Farm |
| Stanford, George, Farm |
| Stearns, Lyman, Farm |
| Stebbens Farm |
| Stewart-Hanson Farm |
| Stokes, Benjamin A., House |
| Stonehurst |
| Tawney Musser Farm |
| Templin-Bradley Company |
| Umsted Farm |
| Underwood Farms Rural Historic District |
| Unzicker-Cook House |
| Vaughn, Richard, Farm |
| Vaugh-Stacy-Evans Farm Historic District |
| Waernicke-Hille House And Store |
| Walker, Cristopher C., House and Farm |
| Warder, John Aston, House |
| Welton, Allen, House |
| White, Walter C., Estate |
| Wilcox, James, House |
| William Tricker Inc. Historic District |
| Woodlawn Farm |
| Woodruff, William H., House |
| Young-Shaw House |
| Zoar Historic District |
Data from United States Park Service and Wikidata
