| Arches | 5 |
| Areas | 28 |
| Bars | 49 |
| Basins | 7 |
| Bays | 51 |
| Beaches | 12 |
| Benches | 7 |
| Bends | 14 |
| Canals | 571 |
| Capes | 39 |
| Channels | 14 |
| Cliffs | 21 |
| Crossings | 13 |
| Falls | 17 |
| Flats | 28 |
| Gaps | 8 |
| Guts | 1 |
| Islands | 132 |
| Lakes | 329 |
| Pillars | 8 |
| Ranges | 4 |
| Rapids | 2 |
| Reservoirs | 1,204 |
| Ridges | 342 |
| Springs | 8 |
| Streams | 3,969 |
| Summits | 326 |
| Swamps | 42 |
| Valleys | 683 |
| Woods | 15 |
| Airports | |
| Public and Private Airports | 374 |
| Heliports | 224 |
| Seaplane Bases and Anchorages | 3 |
| Cemeteries | 7,414 |
| Education - Schools | |
| Other Schools | 1,115 |
| Elementary Schools | 1,537 |
| Middle Schools | 591 |
| High Schools | 806 |
| Colleges & University | 196 |
| Technical & Trade School | 123 |
| Emergency Response & Law Enforcement | |
| Ambulance Service | 267 |
| Fire Station & EMS Station | 1,772 |
| Law Enforcement | 765 |
| Prisons & Correctional Facilities | 49 |
| Federal Lands & Reserves | |
| National Cemeteries | 2 |
| Forests | 1 |
| Parks | 8 |
| Wilderness Areas | 1 |
| Wildlife Areas | 6 |
| Government Services | |
| City or Town Hall | 1,115 |
| Court House | 116 |
| Post Offices | 1,135 |
| Hospitals & Medical Centers | 253 |
| Public Landmarks & Attractions | |
| Campgrounds | 12 |
| Picnic Areas | 36 |
| Trailheads | 45 |
| Visitor Centers | 12 |
| Bars | 1 |
| Canals | 1 |
| Civil | 20 |
| Crossings | 8 |
| Falls | 1 |
| Islands | 14 |
| Lakes | 11 |
| Military (Historical) | 61 |
| Populated Places | 587 |
| Reservoirs | 3 |
| Summits | 1 |
| Swamps | 14 |
| Woods | 2 |
| Ohio's National Historic Landmarks | |
|---|---|
| 66 | |