Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Our Lady of Lourdes Chapel | Church | 390 | Ohio | 40 02 44 N | 080 41 29 W |
| Our Lady of Perpetual Help Catholic Church | Church | 197 | Ohio | 40 02 20 N | 080 43 31 W |
| Park View Elementary School | School | 236 | Ohio | 40 03 18 N | 080 39 41 W |
| Parkview | Populated Place | 237 | Ohio | 40 03 07 N | 080 39 40 W |
| Parkview Memorial Gardens | Cemetery | 357 | Ohio | 40 05 30 N | 080 39 21 W |
| Peninsular Cemetery | Cemetery | 216 | Ohio | 40 04 33 N | 080 42 51 W |
| Peters Run | Stream | | Ohio | 40 02 54 N | 080 38 33 W |
| Peters Run School (historical) | School | 287 | Ohio | 40 05 17 N | 080 37 56 W |
| Peterson Bottom | Flat | 208 | Ohio | 40 02 19 N | 080 39 39 W |
| Peterson Rehabilitation Hospital and Geriatric Center | Hospital | 209 | Ohio | 40 04 48 N | 080 41 35 W |
| Pike Island Lock and Dam | Dam | 196 | Ohio | 40 08 59 N | 080 42 03 W |
| Pike Island Locks and Dam | Dam | 190 | Ohio | 40 09 00 N | 080 42 11 W |
| Pike Island Pool | Reservoir | 190 | Ohio | 40 09 00 N | 080 42 11 W |
| Pleasant Valley | Populated Place | 212 | Ohio | 40 04 08 N | 080 40 51 W |
| Pogue Run | Stream | | Ohio | 40 06 41 N | 080 39 48 W |
| Point Mills | Populated Place | 272 | Ohio | 40 04 57 N | 080 34 51 W |
| Point Run | Stream | | Ohio | 40 04 24 N | 080 35 58 W |
| Potomac | Populated Place | 294 | Ohio | 40 09 10 N | 080 31 45 W |
| Pulaski Field | Park | 192 | Ohio | 40 02 02 N | 080 43 32 W |
| Ray Albert Spring | Spring | 221 | Ohio | 40 10 57 N | 080 40 37 W |
| Reed Spring | Spring | 356 | Ohio | 40 04 31 N | 080 32 33 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 196 | Ohio | 40 04 53 N | 080 43 54 W |
| Rices Run | Stream | | Ohio | 40 08 47 N | 080 31 31 W |
| Richard Morgan Spring | Spring | 345 | Ohio | 40 05 30 N | 080 35 39 W |
| Ritchie Elementary School | School | 200 | Ohio | 40 02 41 N | 080 43 26 W |
| Robert Hartlieb Spring | Spring | 385 | Ohio | 40 05 37 N | 080 37 17 W |
| Robinson Spring | Spring | 348 | Ohio | 40 04 05 N | 080 37 27 W |
| Roneys Point | Populated Place | 250 | Ohio | 40 04 25 N | 080 35 59 W |
| Roneys Point Run | Stream | | Ohio | 40 04 30 N | 080 35 53 W |
| Ruble United Methodist Church | Church | 217 | Ohio | 40 03 52 N | 080 41 27 W |
| Sacred Heart Roman Catholic Church | Church | 203 | Ohio | 40 04 59 N | 080 43 34 W |
| Saint Alphonsus Orphanage | Building | 202 | Ohio | 40 03 37 N | 080 43 23 W |
| Saint Alphonsus Roman Catholic Church | Church | 201 | Ohio | 40 03 39 N | 080 43 25 W |
| Saint Anthony Roman Catholic Church | Church | 208 | Ohio | 40 03 45 N | 080 42 56 W |
| Saint James Evangelical Lutheran Church | Church | 202 | Ohio | 40 03 55 N | 080 43 16 W |
| Saint Joan of Arc Roman Catholic Church | Church | 203 | Ohio | 40 04 32 N | 080 42 20 W |
| Saint Joan of Arc School | School | 206 | Ohio | 40 04 33 N | 080 42 21 W |
| Saint John the Divine Eastern Orthodox Church | Church | 202 | Ohio | 40 03 32 N | 080 43 24 W |
| Saint Johns Episcopal Church | Church | 215 | Ohio | 40 04 48 N | 080 41 08 W |
| Saint Johns Home for Boys | Building | 213 | Ohio | 40 02 30 N | 080 39 17 W |
| Saint Johns United Church of Christ | Church | 202 | Ohio | 40 03 36 N | 080 43 22 W |
| Saint Josephs Roman Catholic Cathedral | Church | 211 | Ohio | 40 03 58 N | 080 43 10 W |
| Saint Josephs Roman Catholic Church | Church | 198 | Ohio | 40 04 23 N | 080 44 01 W |
| Saint Ladislaus Roman Catholic Church | Church | 194 | Ohio | 40 02 08 N | 080 43 38 W |
| Saint Ladislaus School | School | 196 | Ohio | 40 02 08 N | 080 43 29 W |
| Saint Lukes-on-the Island Episcopal Church | Church | 196 | Ohio | 40 04 07 N | 080 43 51 W |
| Saint Marks Lutheran Church | Church | 213 | Ohio | 40 02 23 N | 080 39 26 W |
| Saint Mary Catholic Church | Church | 201 | Ohio | 40 02 47 N | 080 43 26 W |
| Saint Marys School | School | 201 | Ohio | 40 02 48 N | 080 43 26 W |
| Saint Matthews Episcopal Church | Church | 206 | Ohio | 40 03 55 N | 080 43 14 W |
| Saint Michael Roman Catholic Church | Church | 205 | Ohio | 40 04 23 N | 080 40 57 W |
| Saint Michaels Convent | Church | 205 | Ohio | 40 04 22 N | 080 40 59 W |
| Saint Michaels School | School | 202 | Ohio | 40 04 23 N | 080 40 59 W |
| Saint Pauls Episcopal Church | Church | 221 | Ohio | 40 02 51 N | 080 38 41 W |
| Saint Pauls United Church of Christ | Church | 198 | Ohio | 40 02 38 N | 080 43 27 W |
| Saint Stephens Evangelical Reformed Church (historical) | Church | 200 | Ohio | 40 02 47 N | 080 43 31 W |
| Saint Vincent De Paul School | School | 211 | Ohio | 40 02 32 N | 080 39 19 W |
| Saint Vincent DePaul Roman Catholic Church | Church | 217 | Ohio | 40 02 25 N | 080 39 17 W |
| Saint Vincent Home for Girls | Building | 222 | Ohio | 40 02 27 N | 080 39 15 W |
| Sanford Midcap Spring | Spring | 389 | Ohio | 40 07 56 N | 080 34 59 W |
| Schenk Lake | Reservoir | 337 | Ohio | 40 05 53 N | 080 39 50 W |
| Schuetzner Spring | Spring | 403 | Ohio | 40 04 58 N | 080 33 47 W |
| Second Presbyterian Church | Church | 202 | Ohio | 40 03 42 N | 080 43 23 W |
| Second United Presbyterian Church | Church | 207 | Ohio | 40 03 56 N | 080 43 14 W |
| Shannon (historical) | Populated Place | 267 | Ohio | 40 09 29 N | 080 37 36 W |
| Shares Spring | Spring | 329 | Ohio | 40 04 16 N | 080 36 42 W |
| Shepherds Fort (historical) | Military (Historical) | 208 | Ohio | 40 02 36 N | 080 39 31 W |
| Shook Spring | Spring | 376 | Ohio | 40 01 25 N | 080 33 12 W |
| Short Creek | Stream | | Ohio | 40 10 59 N | 080 40 37 W |
| Short Creek Cemetery | Cemetery | 262 | Ohio | 40 09 25 N | 080 38 19 W |
| Short Creek Church | Church | 252 | Ohio | 40 09 23 N | 080 38 22 W |
| Short Creek Speedway (historical) | Locale | 220 | Ohio | 40 09 55 N | 080 39 33 W |
| Simpson United Methodist Church | Church | 219 | Ohio | 40 04 06 N | 080 43 11 W |
| Smith Spring | Spring | 301 | Ohio | 40 02 11 N | 080 34 46 W |
| South Bridge School (historical) | School | 214 | Ohio | 40 03 03 N | 080 38 37 W |
| South Island (subdivision) | Populated Place | 198 | Ohio | 40 03 58 N | 080 43 55 W |
| South Side Church of God | Church | 198 | Ohio | 40 02 43 N | 080 43 32 W |
| South Wheeling (subdivision) | Populated Place | 198 | Ohio | 40 02 29 N | 080 43 28 W |
| Souttell Run | Stream | | Ohio | 40 09 16 N | 080 39 32 W |
| Speidel Spring | Spring | 368 | Ohio | 40 06 45 N | 080 38 44 W |
| Springdale | Populated Place | 361 | Ohio | 40 03 45 N | 080 39 12 W |
| Stackyard Hollow | Valley | | Ohio | 40 04 30 N | 080 42 17 W |
| Stamp Spring | Spring | 331 | Ohio | 40 07 51 N | 080 37 37 W |
| Steenrod Elementary School | School | 219 | Ohio | 40 04 01 N | 080 41 14 W |
| Stifel Center Spring | Spring | 198 | Ohio | 40 04 10 N | 080 40 59 W |
| Stone Church Cemetery | Cemetery | 239 | Ohio | 40 02 30 N | 080 39 10 W |
| Stone United Presbyterian Church | Church | 211 | Ohio | 40 02 24 N | 080 39 50 W |
| Stop 28 Hollow | Valley | | Ohio | 40 09 09 N | 080 41 51 W |
| Stratford Saline Spring | Spring | 211 | Ohio | 40 04 59 N | 080 41 29 W |
| Stratford Spring | Spring | 211 | Ohio | 40 04 59 N | 080 41 29 W |
| Supler Spring | Spring | 395 | Ohio | 40 03 40 N | 080 33 49 W |
| Synagogue of Israel | Church | 211 | Ohio | 40 04 38 N | 080 40 51 W |
| Tanyard Run | Stream | | Ohio | 40 02 11 N | 080 35 40 W |
| The Lower Market (historical) | Locale | 198 | Ohio | 40 03 41 N | 080 43 29 W |
| The Upper Market House | Building | 213 | Ohio | 40 04 13 N | 080 43 24 W |
| The Way Memorial Temple | Church | 198 | Ohio | 40 04 21 N | 080 43 56 W |
| Third Presbyterian Church | Church | 198 | Ohio | 40 02 37 N | 080 43 29 W |
| Thomson United Methodist Church | Church | 198 | Ohio | 40 04 08 N | 080 43 58 W |
| Todd Run | Stream | | Ohio | 40 03 34 N | 080 31 48 W |
| Triadelphia | Populated Place | 225 | Ohio | 40 03 09 N | 080 37 42 W |
| Triadelphia High School (historical) | School | 227 | Ohio | 40 03 35 N | 080 40 30 W |
| Triadelphia Middle School | School | 229 | Ohio | 40 03 36 N | 080 40 28 W |
| Triadelphia Post Office | Post Office | 220 | Ohio | 40 03 09 N | 080 37 48 W |
| Triadelphia United Methodist Church | Church | 226 | Ohio | 40 03 10 N | 080 37 43 W |
| Trinity Evangelical Lutheran Church | Church | 200 | Ohio | 40 02 48 N | 080 43 31 W |
| Tustin Spring | Spring | 364 | Ohio | 40 03 44 N | 080 33 00 W |
| Twilight | Populated Place | 244 | Ohio | 40 02 10 N | 080 35 36 W |
| Upper Twin Island | Island | 195 | Ohio | 40 08 04 N | 080 42 27 W |
| Valley Grove | Populated Place | 280 | Ohio | 40 05 15 N | 080 34 13 W |
| Valley Grove Post Office | Post Office | 280 | Ohio | 40 05 15 N | 080 34 13 W |