Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Church of the Nazarene | Church | 274 | Highland | 39 20 43 N | 083 23 08 W |
| Church of the Nazarene | Church | 225 | Hocking | 39 32 27 N | 082 24 14 W |
| Church of the Nazarene | Church | 229 | Huron | 41 16 26 N | 082 49 51 W |
| Church of the Nazarene | Church | 286 | Huron | 41 02 55 N | 082 43 34 W |
| Church of the Nazarene | Church | 310 | Knox | 40 23 40 N | 082 28 38 W |
| Church of the Nazarene | Church | 213 | Lake | 41 43 18 N | 081 14 36 W |
| Church of the Nazarene | Church | 255 | Licking | 40 03 31 N | 082 23 04 W |
| Church of the Nazarene | Church | 260 | Lorain | 41 10 11 N | 082 12 40 W |
| Church of the Nazarene | Church | 224 | Montgomery | 39 38 51 N | 084 16 36 W |
| Church of the Nazarene | Church | 205 | Morgan | 39 39 04 N | 081 51 31 W |
| Church of the Nazarene | Church | 190 | Sandusky | 41 21 22 N | 083 07 33 W |
| Church of the Nazarene | Church | 234 | Seneca | 41 09 40 N | 083 24 31 W |
| Church of the Nazarene | Church | 305 | Stark | 40 47 39 N | 081 32 27 W |
| Church of the Nazarene | Church | 350 | Stark | 40 54 55 N | 081 06 02 W |
| Church of the Nazarene | Church | 274 | Tuscarawas | 40 29 27 N | 081 26 27 W |
| Church of the Nazarene | Church | 231 | Vinton | 39 15 15 N | 082 28 43 W |
| Church of the Nazarene | Church | 262 | Wyandot | 40 48 56 N | 083 17 02 W |
| Church of the Nazarene (historical) | Church | 209 | Cuyahoga | 41 28 29 N | 081 43 29 W |
| Church of the Nazarene (historical) | Church | 207 | Warren | 39 33 19 N | 084 18 36 W |
| Church of the New Covenant | Church | 184 | Lucas | 41 41 25 N | 083 35 04 W |
| Church of the Open Door | Church | 236 | Lorain | 41 22 26 N | 082 09 40 W |
| Church of the Redeemed | Church | 236 | Franklin | 39 56 43 N | 083 03 43 W |
| Church of the Redeemer | Church | 218 | Hamilton | 39 08 21 N | 084 25 60 W |
| Church of the Redeemer | Church | 184 | Lorain | 41 27 51 N | 082 10 35 W |
| Church of the Resurrection | Church | 253 | Hamilton | 39 07 18 N | 084 34 42 W |
| Church of the Risen Christ | Church | 227 | Hamilton | 39 07 29 N | 084 30 07 W |
| Church of the Savior | Church | 241 | Hamilton | 39 14 54 N | 084 20 50 W |
| Church of the Saviour | Church | 293 | Cuyahoga | 41 29 25 N | 081 33 52 W |
| Church of the Transfiguration | Church | 277 | Miami | 39 56 58 N | 084 19 20 W |
| Church of the United Brethren in Christ | Church | 302 | Jefferson | 40 22 12 N | 080 38 25 W |
| Church of the Word | Church | 209 | Lake | 41 43 04 N | 081 14 37 W |
| Church of Universal Forces | Church | 244 | Franklin | 39 58 08 N | 082 58 27 W |
| Church Square Family Health Center | Hospital | | Cuyahoga | 41 30 15 N | 081 37 59 W |
| Churchill | Populated Place | 325 | Trumbull | 41 09 43 N | 080 39 53 W |
| Churchill Park | Park | 304 | Trumbull | 41 09 35 N | 080 40 14 W |
| Churchill Post Office (historical) | Post Office | 323 | Trumbull | 41 09 45 N | 080 39 54 W |
| Churchtown | Populated Place | 305 | Washington | 39 28 02 N | 081 32 52 W |
| Churchtown Cemetery | Cemetery | 306 | Washington | 39 27 58 N | 081 32 40 W |
| Churn Creek | Stream | | Adams | 38 46 44 N | 083 19 60 W |
| Churn Creek | Stream | | Highland | 39 11 54 N | 083 29 15 W |
| Churn Creek Church | Church | 220 | Adams | 38 44 45 N | 083 18 56 W |
| Churn Creek Reservoir | Reservoir | 303 | Adams | 38 43 07 N | 083 16 38 W |
| Cicero (historical) | Populated Place | 239 | Defiance | 41 20 22 N | 084 42 34 W |
| Cicero Post Office (historical) | Post Office | 239 | Defiance | 41 20 20 N | 084 42 35 W |
| Cigar Ridge School (historical) | School | 367 | Holmes | 40 31 07 N | 081 41 09 W |
| Cilley (historical) | Populated Place | 150 | Hamilton | 39 11 00 N | 084 46 40 W |
| Cincinnati | Populated Place | 191 | Hamilton | 39 09 43 N | 084 27 25 W |
| Cincinnati Academy of Physical Education | School | 203 | Hamilton | 39 11 20 N | 084 31 13 W |
| Cincinnati Art Club (historical) | Building | 161 | Hamilton | 39 06 02 N | 084 30 12 W |
| Cincinnati Art Museum | Building | 234 | Hamilton | 39 06 50 N | 084 29 50 W |
| Cincinnati Baptist Church | Church | 187 | Hamilton | 39 06 59 N | 084 30 50 W |
| Cincinnati Bible Seminary | School | 255 | Hamilton | 39 06 48 N | 084 33 12 W |
| Cincinnati Bibleway Church | Church | 182 | Hamilton | 39 09 41 N | 084 23 24 W |
| Cincinnati Bowl (historical) | Locale | 250 | Hamilton | 39 15 10 N | 084 24 05 W |
| Cincinnati Chinese Church | Church | 251 | Hamilton | 39 13 52 N | 084 32 18 W |
| Cincinnati City Hall | Building | 167 | Hamilton | 39 06 15 N | 084 31 10 W |
| Cincinnati Club | Building | 168 | Hamilton | 39 06 17 N | 084 30 55 W |
| Cincinnati College (historical) | School | 163 | Hamilton | 39 06 00 N | 084 30 39 W |
| Cincinnati College of Embalming (historical) | School | 231 | Hamilton | 39 08 14 N | 084 29 44 W |
| Cincinnati Commercial Hospital (historical) | Hospital | 165 | Hamilton | 39 06 27 N | 084 31 15 W |
| Cincinnati Community Academy | School | 183 | Hamilton | 39 09 46 N | 084 23 25 W |
| Cincinnati Convention Center | Building | 167 | Hamilton | 39 06 04 N | 084 31 02 W |
| Cincinnati Country Club | Locale | 246 | Hamilton | 39 07 47 N | 084 27 14 W |
| Cincinnati Country Day School | School | 263 | Hamilton | 39 11 10 N | 084 19 39 W |
| Cincinnati Female Academy (historical) | School | 162 | Hamilton | 39 06 07 N | 084 31 39 W |
| Cincinnati Fire Museum | Building | 166 | Hamilton | 39 06 19 N | 084 31 12 W |
| Cincinnati Gardens | Park | 187 | Hamilton | 39 10 51 N | 084 27 19 W |
| Cincinnati Gas and Electric Lake | Reservoir | 148 | Clermont | 38 58 54 N | 084 17 36 W |
| Cincinnati Gas and Electric Lake Dam | Dam | 148 | Clermont | 38 58 54 N | 084 17 36 W |
| Cincinnati General Hospital | Hospital | 241 | Hamilton | 39 08 17 N | 084 30 14 W |
| Cincinnati Hebrew Day School | School | 183 | Hamilton | 39 12 28 N | 084 27 40 W |
| Cincinnati Home for Aged Men | Building | 245 | Hamilton | 39 08 20 N | 084 30 04 W |
| Cincinnati Junior Academy | School | 208 | Hamilton | 39 09 12 N | 084 30 59 W |
| Cincinnati Law Library | Building | 165 | Hamilton | 39 06 26 N | 084 30 37 W |
| Cincinnati Law School (historical) | School | 168 | Hamilton | 39 06 18 N | 084 30 55 W |
| Cincinnati Masonic Temple | Building | 166 | Hamilton | 39 06 06 N | 084 30 26 W |
| Cincinnati Mills | Locale | 250 | Hamilton | 39 18 09 N | 084 31 20 W |
| Cincinnati Municipal Airport | Airport | 144 | Hamilton | 39 06 11 N | 084 25 07 W |
| Cincinnati Municipal Reference Library | Building | 167 | Hamilton | 39 06 15 N | 084 31 10 W |
| Cincinnati Museum of Natural History | Building | 166 | Hamilton | 39 06 28 N | 084 30 45 W |
| Cincinnati Museum of Natural History Nature Preserve | Park | 188 | Adams | 38 42 15 N | 083 26 22 W |
| Cincinnati Museum of Natural History Nature Preserve | Park | 159 | Adams | 38 40 48 N | 083 27 25 W |
| Cincinnati Nature Center Lake | Reservoir | 203 | Clermont | 39 07 24 N | 084 14 36 W |
| Cincinnati Nature Center Lake Dam | Dam | 207 | Clermont | 39 07 24 N | 084 14 36 W |
| Cincinnati Post Office | Post Office | 168 | Hamilton | 39 06 07 N | 084 30 39 W |
| Cincinnati Primitive Baptist Church | Church | 167 | Hamilton | 39 12 36 N | 084 28 14 W |
| Cincinnati Public Library | Building | 168 | Hamilton | 39 06 17 N | 084 30 48 W |
| Cincinnati Technical College | School | 185 | Hamilton | 39 08 58 N | 084 32 10 W |
| Cincinnati Union Bethel (historical) | Building | 154 | Hamilton | 39 06 00 N | 084 30 15 W |
| Cincinnati Waterworks | Locale | 162 | Hamilton | 39 04 27 N | 084 25 17 W |
| Cincinnati West Airport | Airport | 179 | Hamilton | 39 15 29 N | 084 46 32 W |
| Cincinnati Womens Club | Building | 220 | Hamilton | 39 09 27 N | 084 31 10 W |
| Cincinnati World Industrial Park | Locale | 189 | Butler | 39 18 10 N | 084 26 36 W |
| Cincinnati Zoological Gardens | Park | 220 | Hamilton | 39 08 41 N | 084 30 30 W |
| Cincinnati-Blue Ash Airport | Airport | 255 | Hamilton | 39 14 47 N | 084 23 20 W |
| Cindy Barr Field | Park | 338 | Wayne | 40 48 46 N | 081 55 60 W |
| Cinergy Field | Park | 146 | Hamilton | 39 05 48 N | 084 30 30 W |
| Cinnamon Creek Park | Park | 296 | Greene | 39 42 44 N | 084 05 42 W |
| Cinnamon Lake | Reservoir | 354 | Ashland | 40 59 06 N | 082 10 42 W |
| Cinnamon Lake Dam | Dam | 354 | Ashland | 40 59 06 N | 082 10 42 W |
| Circle C Airport | Airport | 319 | Mahoning | 41 02 20 N | 080 59 02 W |
| Circle Freeway Industrial Park | Locale | 204 | Butler | 39 18 27 N | 084 28 48 W |
| Circle Green | Populated Place | 408 | Jefferson | 40 29 04 N | 080 52 32 W |
| Circle Green Methodist Episcopal Cemetery | Cemetery | 405 | Jefferson | 40 28 54 N | 080 52 36 W |
| Circle Green Post Office (historical) | Post Office | 403 | Jefferson | 40 29 05 N | 080 52 34 W |
| Circle Hill | Populated Place | 297 | Miami | 40 04 22 N | 084 24 52 W |
| Circle Hills | Populated Place | 220 | Pickaway | 39 33 51 N | 082 54 32 W |
| Circle Island | Island | 274 | Fairfield | 39 55 10 N | 082 29 20 W |
| Circle Office Park | Locale | 245 | Hamilton | 39 17 19 N | 084 33 47 W |
| Circle Park | Park | 265 | Trumbull | 41 10 59 N | 080 45 33 W |