Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Portsmouth High School | School | 162 | Scioto | 38 44 08 N | 082 59 24 W |
| Portsmouth Mental Receiving Hospital | Hospital | 197 | Scioto | 38 45 09 N | 082 58 15 W |
| Portsmouth Post Office | Post Office | 162 | Scioto | 38 44 07 N | 082 59 39 W |
| Portsmouth Public Library | Building | 162 | Scioto | 38 44 05 N | 082 59 20 W |
| Portsmouth Seventh Day Adventist Church | Church | 174 | Scioto | 38 45 16 N | 082 58 30 W |
| Portsmouth Wesleyan Church | Church | 162 | Scioto | 38 43 57 N | 083 00 25 W |
| Portsmouth West High School | School | 193 | Scioto | 38 45 39 N | 083 02 08 W |
| Positive Living Center | Church | 170 | Hamilton | 39 12 58 N | 084 28 27 W |
| Possum Elementary School | School | 309 | Clark | 39 53 23 N | 083 50 14 W |
| Possum Hollow | Valley | | Clermont | 39 06 17 N | 084 10 46 W |
| Possum Hollow | Valley | | Lawrence | 38 28 08 N | 082 36 01 W |
| Possum Hollow | Valley | | Perry | 39 46 41 N | 082 05 08 W |
| Possum Hollow | Valley | | Scioto | 38 42 15 N | 082 50 10 W |
| Possum Hollow | Valley | | Tuscarawas | 40 26 35 N | 081 27 44 W |
| Possum Hollow Run | Stream | | Jefferson | 40 20 50 N | 080 44 43 W |
| Possum Hollow Trail | Trail | 354 | Champaign | 40 10 40 N | 083 57 42 W |
| Possum Run | Stream | | Richland | 40 37 37 N | 082 23 02 W |
| Possum Run Golf Course | Locale | 407 | Richland | 40 43 16 N | 082 30 37 W |
| Possum Run Youth Camp | Locale | | Hamilton | 39 16 38 N | 084 32 28 W |
| Possum Woods (subdivision) | Populated Place | 311 | Clark | 39 53 01 N | 083 49 37 W |
| Post Ditch | Canal | 291 | Fayette | 39 28 51 N | 083 25 19 W |
| Post Town | Populated Place | 284 | Montgomery | 39 46 51 N | 084 18 42 W |
| Postboy | Populated Place | 251 | Tuscarawas | 40 13 37 N | 081 35 03 W |
| Postboy Creek | Stream | | Tuscarawas | 40 13 28 N | 081 34 58 W |
| Poste Lake | Reservoir | 274 | Franklin | 40 05 13 N | 083 00 02 W |
| Postelwaite Lake Dam | Dam | 334 | Licking | 40 02 48 N | 082 37 18 W |
| Postle Cemetery | Cemetery | 276 | Franklin | 39 56 34 N | 083 08 38 W |
| Postle Hall | Building | 224 | Franklin | 39 59 46 N | 083 00 59 W |
| Poston | Populated Place | 210 | Athens | 39 22 44 N | 082 05 08 W |
| Poston Church | Church | 207 | Athens | 39 22 43 N | 082 05 08 W |
| Poston Elementary School | School | 221 | Athens | 39 25 01 N | 082 13 44 W |
| Poston Post Office (historical) | Post Office | 221 | Athens | 39 22 45 N | 082 05 10 W |
| Potato Creek Swamp (historical) | Swamp | 261 | Wyandot | 40 51 25 N | 083 28 50 W |
| Potato Knob | Summit | 349 | Adams | 39 02 23 N | 083 20 60 W |
| Potato Ridge | Ridge | 325 | Ross | 39 11 21 N | 083 06 32 W |
| Potato Run | Stream | | Hancock | 40 54 56 N | 083 33 21 W |
| Potpie Run | Stream | | Washington | 39 24 59 N | 081 20 14 W |
| Potsdam | Populated Place | 308 | Miami | 39 57 48 N | 084 25 03 W |
| Potsdam Cemetery | Cemetery | 309 | Miami | 39 57 54 N | 084 24 54 W |
| Potsdam Church of the Brethren | Church | 307 | Miami | 39 57 47 N | 084 24 53 W |
| Potsdam Missionary Church | Church | 307 | Miami | 39 57 47 N | 084 24 48 W |
| Potsdam Post Office | Post Office | 308 | Miami | 39 57 50 N | 084 25 05 W |
| Potsdam United Methodist Church | Church | 308 | Miami | 39 57 42 N | 084 25 02 W |
| Pottawatomie Creek | Stream | | Van Wert | 40 57 02 N | 084 33 53 W |
| Pottenger Run | Stream | | Preble | 39 38 19 N | 084 38 05 W |
| Potter Creek | Stream | | Portage | 41 03 15 N | 081 16 35 W |
| Potter Ditch | Canal | 193 | Lucas | 41 38 16 N | 083 42 14 W |
| Potter Village Shopping Center | Locale | 191 | Sandusky | 41 21 33 N | 083 08 19 W |
| Potters Field | Cemetery | 258 | Hamilton | 39 07 11 N | 084 35 24 W |
| Potters Field | Cemetery | 295 | Hardin | 40 39 00 N | 083 38 11 W |
| Potters Park Municipal Golf Course | Locale | 210 | Butler | 39 23 38 N | 084 35 12 W |
| Potters Pond | Bay | 175 | Lucas | 41 40 42 N | 083 17 30 W |
| Pottersburg | Populated Place | 332 | Union | 40 15 58 N | 083 30 03 W |
| Pottersburg Post Office (historical) | Post Office | | Union | 40 15 58 N | 083 30 02 W |
| Pottertown Cemetery | Cemetery | 205 | Wood | 41 21 00 N | 083 52 11 W |
| Pottery Addition | Populated Place | 210 | Jefferson | 40 24 08 N | 080 37 30 W |
| Potts Cemetery | Cemetery | 396 | Monroe | 39 45 32 N | 081 09 54 W |
| Potts Hill | Summit | 389 | Ross | 39 11 50 N | 083 14 08 W |
| Potts Hill Cemetery | Cemetery | 391 | Ross | 39 11 59 N | 083 13 50 W |
| Potts Hill School (historical) | School | 282 | Ross | 39 12 15 N | 083 14 44 W |
| Poulton | Populated Place | 213 | Monroe | 39 36 27 N | 081 07 16 W |
| Poulton Post Office (historical) | Post Office | 222 | Monroe | 39 36 25 N | 081 07 14 W |
| Poultry Days Park | Park | 304 | Darke | 40 12 48 N | 084 28 45 W |
| Pound School (historical) | School | 219 | Fulton | 41 37 22 N | 084 17 15 W |
| Poverty Ridge | Ridge | 307 | Muskingum | 39 51 06 N | 081 53 04 W |
| Poverty Run | Stream | | Muskingum | 40 00 07 N | 082 07 18 W |
| Poverty Run | Stream | | Wyandot | 40 56 55 N | 083 18 37 W |
| Poverty Run School (historical) | School | 237 | Muskingum | 39 59 40 N | 082 08 23 W |
| Poverty Run School (historical) | School | 247 | Wyandot | 40 58 41 N | 083 19 45 W |
| Powder Lick Run | Stream | | Union | 40 23 06 N | 083 24 43 W |
| Powderhorn Golf Course | Locale | 236 | Lake | 41 46 00 N | 081 01 30 W |
| Powderlick | Populated Place | 328 | Clinton | 39 27 36 N | 083 42 47 W |
| Powderlick School (historical) | School | 328 | Clinton | 39 27 40 N | 083 42 44 W |
| Powdermaker Ditch | Canal | 188 | Lorain | 41 29 09 N | 082 02 17 W |
| Powell | Populated Place | 288 | Coshocton | 40 18 21 N | 081 42 06 W |
| Powell | Populated Place | 277 | Delaware | 40 09 28 N | 083 04 31 W |
| Powell Cemetery | Cemetery | 277 | Coshocton | 40 18 21 N | 081 42 12 W |
| Powell Cemetery | Cemetery | 274 | Delaware | 40 09 33 N | 083 04 29 W |
| Powell Cemetery | Cemetery | 241 | Franklin | 39 54 46 N | 082 49 44 W |
| Powell Cemetery | Cemetery | 246 | Hancock | 40 58 48 N | 083 43 36 W |
| Powell Church | Church | 243 | Hancock | 41 00 19 N | 083 41 46 W |
| Powell Community Church | Church | 286 | Delaware | 40 10 12 N | 083 06 20 W |
| Powell Creek | Stream | | Defiance | 41 15 18 N | 084 22 52 W |
| Powell Ditch | Canal | 285 | Madison | 40 03 40 N | 083 16 30 W |
| Powell Park | Park | 379 | Logan | 40 21 47 N | 083 45 47 W |
| Powell Plaza Shopping Center | Locale | 261 | Montgomery | 39 49 58 N | 084 08 35 W |
| Powell Post Office | Post Office | 277 | Delaware | 40 09 30 N | 083 04 30 W |
| Powell Ridge | Ridge | 316 | Scioto | 38 54 03 N | 083 11 13 W |
| Powellsville | Populated Place | 171 | Scioto | 38 40 00 N | 082 47 01 W |
| Powellsville Baptist Cemetery | Cemetery | 184 | Scioto | 38 39 53 N | 082 47 23 W |
| Powellsville Post Office (historical) | Post Office | 171 | Scioto | 38 40 00 N | 082 46 60 W |
| Powelson State Wildlife Area | Park | 296 | Muskingum | 40 03 25 N | 082 00 29 W |
| Power Building | Building | | Hamilton | 39 06 19 N | 084 30 34 W |
| Power House Tabernacle Church of God in Christ | Church | 189 | Lucas | 41 38 32 N | 083 34 56 W |
| Power of Faith Baptist Church | Church | 228 | Franklin | 39 55 48 N | 082 59 44 W |
| Power Point Church | Church | 283 | Columbiana | 40 42 30 N | 080 42 03 W |
| Powerhouse Playground | Park | 180 | Butler | 39 22 23 N | 084 33 45 W |
| Powers | Populated Place | 224 | Fulton | 41 40 41 N | 084 14 56 W |
| Powers Brook | Stream | | Summit | 41 12 45 N | 081 28 10 W |
| Powers Cemetery | Cemetery | 201 | Washington | 39 32 51 N | 081 36 58 W |
| Powers Elementary School | School | 201 | Lorain | 41 24 09 N | 082 13 15 W |
| Powers Landing | Locale | 150 | Adams | 38 37 05 N | 083 19 12 W |
| Powers Reservoir | Reservoir | 352 | Crawford | 40 43 12 N | 082 48 12 W |
| Powers School (historical) | School | 225 | Fulton | 41 40 29 N | 084 12 42 W |
| Powers School (historical) | School | 216 | Paulding | 41 10 45 N | 084 32 37 W |
| Powers Upground Reservoir Dam | Dam | 352 | Crawford | 40 43 12 N | 082 48 12 W |
| Powhatan Cemetery | Cemetery | 207 | Belmont | 39 52 17 N | 080 47 48 W |
| Powhatan Elementary School | School | 191 | Belmont | 39 51 33 N | 080 48 22 W |
| Powhatan High School (historical) | School | 191 | Belmont | 39 51 33 N | 080 48 21 W |
| Powhatan Point | Cape | 208 | Belmont | 39 51 36 N | 080 48 55 W |