| Alexander, Dr. William S., House | Oxford | Building | 1987 |
| Anderson-Shaffer House | Hamilton | Building | 1974 |
| Augspurger Grist Mill | Woodsdale | Building | 1984 |
| Augspurger Paper Company Rowhouse #1 | Woodsdale | Building | 1984 |
| Augspurger Paper Company Rowhouse #2 | Woodsdale | Building | 1984 |
| Augspurger Schoolhouse | Woodsdale | Building | 1984 |
| Augspurger, Frederick, Farm | Trenton | Building | 1984 |
| Augspurger, John, Farm No. 1 | Trenton | Building | 1984 |
| Augspurger, John, Farm No. 2 | Trenton | Building | 1984 |
| Augspurger, Samuel, Farm | Trenton | Building | 1984 |
| Augspurger, Samuel, House | Woodsdale | Building | 1984 |
| Austin-Magie Farm and Mill District | Oxford | District | 1982 |
| Beckett-Manrod House | Hamilton | Building | 1977 |
| Benninghofen House | Hamilton | Building | 1973 |
| Big Four Depot | Middletown | Building | 2013 |
| Butler County Courthouse | Hamilton | Building | 1981 |
| Central Avenue Historic District | Middletown | District | 2014 |
| Champion Coated Paper Company | Hamilton | District | 2019 |
| Cincinnati, Hamilton, and Dayton Railroad Station | Hamilton | Building | 2024 |
| Cochran Farm | Millville | Building | 1973 |
| Dayton-Campbell Historic District | Hamilton | District | 1983 |
| Demoret Mound | Ross | Site | 1975 |
| Deuscher, Henry P., House | Trenton | Building | 1984 |
| Dewitt, Zachariah Price, Cabin | Oxford | Building | 1973 |
| Dixon-Globe Opera House-Robinson-Schwenn Building | Hamilton | Building | 2000 |
| Edgeton | Hamilton | Building | 1975 |
| Ehresman, Christian, Farm | Trenton | Building | 1984 |
| Elliott and Stoddard Halls, Miami University | Oxford | Building | 1973 |
| Fairfield Township Works I | Hamilton | Site | 1971 |
| Fitz Randolph-Rogers House | Hamilton | Building | 1978 |
| Fortified Hill Works | Hamilton | Site | 1974 |
| Garver-Rentschler Barn | Hamilton | Building | 1980 |
| German Village Historic District | Hamilton | District | 1991 |
| Great Mound | Middletown | Site | 1971 |
| Greenwood Cemetery | Hamilton | District | 1994 |
| Hamilton Catholic High School | Hamilton | Building | 1986 |
| Hamilton Downtown Historic District | Hamilton | District | 2016 |
| Hamilton Historic Civic Center | Hamilton | District | 1995 |
| Harding-Jones Paper Company District | Excello | District | 1975 |
| Herron Gymnasium | Oxford | Building | 1979 |
| Hidley, James P., Cottage | Reily | Building | 1980 |
| High Street Commercial Block | Hamilton | District | 2004 |
| High Street Commercial Block (Boundary Increase) | Hamilton | District | 2014 |
| Hogan-Borger Mound Archeological District | Ross | Site | 1975 |
| Hotel Manchester | Middletown | Building | 2014 |
| Howe Tavern | College Corner | Building | 1976 |
| Howell and Anna Powell Farm | Fairfield | Building | 2019 |
| Hueston, Matthew, House | Hamilton | Building | 1977 |
| Hughes Manor | Middletown | Building | 1994 |
| Hughes School | Hamilton | Building | 1976 |
| Hunting Lodge Farm | Oxford | Building | 1982 |
| Iutzi, Christian, Farm | Trenton | Building | 1984 |
| Kennel, John Sr., Farm | Trenton | Building | 1984 |
| Kennel, John, Jr., Farm | Trenton | Building | 1984 |
| Kumler, Elias, House | Oxford | Building | 1980 |
| Lane-Hooven House | Hamilton | Building | 1973 |
| Lane's Mill Historic Buildings | Oxford | District | 1980 |
| Langstroth Cottage NHL | Oxford | Building | 1976 |
| Main Street Commercial Historic District | Middletown | District | 2014 |
| Maltby, Henry, House | Oxford | Building | 1979 |
| Mann Mound | Jacksonburg | Site | 1971 |
| McGuffey, William H., House NHL | Oxford | Building | 1966 |
| Miami-Erie Canal Site Historic District | West Chester | District | 1978 |
| Mill Office and Post Office | Woodsdale | Building | 1984 |
| Morgan Township House | Okeana | Building | 2016 |
| Morgan-Hueston House | Fairfield | Building | 1990 |
| Notre Dame Academy and Notre Dame High School | Hamilton | Building | 2001 |
| Oakland Residential Historic District | Middletown | District | 2023 |
| Oxford Female Institute | Oxford | Building | 1976 |
| Oxford Railroad Depot and Junction House | Oxford | Building | 1980 |
| Pugh's Mill Covered Bridge | Oxford | Structure | 1975 |
| Rentschler House | Hamilton | Building | 1983 |
| Roberts Mound | Auburn | Site | 1975 |
| Rose, D. S., Mound | Huntsville | Site | 1975 |
| Ross Trails Adena Circle | Ross | Site | 1975 |
| Rossville Historic District | Hamilton | District | 1975 |
| Schrock, Peter, Jr., Farm | Trenton | Building | 1984 |
| Scott, John, Barn and Granary | Shandon | Building | 2005 |
| Shaw Farm | Ross | Building | 1974 |
| Shuler & Benninghofen Woolen Mill | Hamilton | Building | 2023 |
| Sigma Aplpha Epsilon Chapter House of Miami University | Oxford | Building | 2005 |
| Snider, Dan F., Ford Dealership Building | Middletown | Building | 2014 |
| South Main Street District | Middletown | District | 1978 |
| Spread Eagle Tavern-Conrey, James D., House | Cincinnati | Building | 2003 |
| St. Stephen Church and Rectory | Hamilton | Building | 1982 |
| Symmes Mission Chapel | Fairfield | Building | 1980 |
| Thomas Select School | Shandon | Building | 1977 |
| Tytus, John B., House NHL | Middletown | Building | 1975 |
| Union Township Works II | Pisgah | Site | 1971 |
| Unzicker-Cook House | Oxford | Building | 1974 |
| Vaughan, John, House | Shandon | Building | 1975 |
| Voice of America Bethany Relay Station | West Chester | Building | 2006 |
| Western Female Seminary | Oxford | District | 1979 |
| Williamson Mound Archeological District | Maud | Site | 1975 |
Langstroth Cottage NHL Oxford · Building · listed 1976 
McGuffey, William H., House NHL Oxford · Building · listed 1966 
Tytus, John B., House NHL Middletown · Building · listed 1975 
Alexander, Dr. William S., House Oxford · Building · listed 1987 
Anderson-Shaffer House Hamilton · Building · listed 1974 
Augspurger Grist Mill Woodsdale · Building · listed 1984 
Augspurger Paper Company Rowhouse #1 Woodsdale · Building · listed 1984 
Augspurger Paper Company Rowhouse #2 Woodsdale · Building · listed 1984 
Augspurger Schoolhouse Woodsdale · Building · listed 1984 
Augspurger, Frederick, Farm Trenton · Building · listed 1984