Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| New Bethel Church | Church | 314 | Ross | 39 23 49 N | 083 14 07 W |
| New Jerusalem Temple (historical) | Church | 192 | Ross | 39 19 53 N | 082 59 02 W |
| New Salem (historical) | Populated Place | 273 | Ross | 39 19 42 N | 083 21 30 W |
| Newingburg (historical) | Populated Place | 344 | Ross | 39 16 04 N | 083 06 05 W |
| Newingburg Post Office (historical) | Post Office | 340 | Ross | 39 16 05 N | 083 06 05 W |
| Nipgen | Populated Place | 327 | Ross | 39 11 28 N | 083 08 58 W |
| Nipgen Post Office (historical) | Post Office | 328 | Ross | 39 11 30 N | 083 08 60 W |
| Noble Cemetery | Cemetery | 214 | Ross | 39 28 54 N | 083 03 19 W |
| Noble School (historical) | School | 253 | Ross | 39 29 10 N | 083 10 39 W |
| North Branch Indian Creek | Stream | | Ross | 39 16 08 N | 082 57 56 W |
| North Fork Buckskin Creek | Stream | | Ross | 39 20 27 N | 083 18 39 W |
| North Fork Church | Church | 203 | Ross | 39 21 03 N | 083 03 36 W |
| North Fork Paint Creek | Stream | | Ross | 39 18 49 N | 083 01 35 W |
| North Fork Village | Populated Place | 201 | Ross | 39 20 09 N | 083 01 45 W |
| Nuckols Cemetery | Cemetery | 263 | Ross | 39 17 19 N | 083 20 12 W |
| Ohio University Chillicothe Branch | School | 251 | Ross | 39 19 41 N | 083 00 17 W |
| Old Methodist Cemetery | Cemetery | 224 | Ross | 39 23 57 N | 083 10 47 W |
| Old Methodist Cemetery | Cemetery | 261 | Ross | 39 28 02 N | 082 44 41 W |
| Old Stone Cemetery | Cemetery | 267 | Ross | 39 20 34 N | 083 22 08 W |
| Oldtown Run | Stream | | Ross | 39 23 45 N | 083 10 07 W |
| Opossum Hollow | Valley | | Ross | 39 11 45 N | 082 52 43 W |
| Overly Chapel | Church | 235 | Ross | 39 22 53 N | 082 56 56 W |
| Overly Chapel Cemetery | Cemetery | 235 | Ross | 39 22 53 N | 082 56 56 W |
| Owl Creek | Stream | | Ross | 39 18 41 N | 083 06 46 W |
| Paint Creek | Stream | | Ross | 39 17 43 N | 082 55 60 W |
| Paint Creek State Park | Park | 260 | Ross | 39 15 15 N | 083 22 35 W |
| Paint Valley | Valley | | Ross | 39 19 37 N | 083 05 13 W |
| Paint Valley High School | School | 213 | Ross | 39 14 31 N | 083 12 53 W |
| Paint Valley School (historical) | School | 196 | Ross | 39 17 30 N | 083 07 06 W |
| Pake Cemetery | Cemetery | 242 | Ross | 39 11 52 N | 083 17 35 W |
| Peecher Cemetery | Cemetery | 237 | Ross | 39 16 43 N | 082 47 13 W |
| Pierce School (historical) | School | 256 | Ross | 39 21 57 N | 083 10 54 W |
| Pine Lake Dam | Dam | 243 | Ross | 39 23 06 N | 082 44 54 W |
| Pinnacle Knob | Summit | 366 | Ross | 39 13 08 N | 083 03 52 W |
| Piny Run | Stream | | Ross | 39 21 22 N | 082 49 24 W |
| Pisgah Church | Church | 302 | Ross | 39 24 04 N | 083 19 35 W |
| Pisgah School (historical) | School | 314 | Ross | 39 24 37 N | 083 19 44 W |
| Platter Cemetery | Cemetery | 219 | Ross | 39 13 42 N | 083 14 46 W |
| Pleasant Grove | Populated Place | 320 | Ross | 39 13 43 N | 083 07 56 W |
| Pleasant Hill Cemetery | Cemetery | 344 | Ross | 39 11 59 N | 083 11 24 W |
| Pleasant Hill Cemetery | Cemetery | 349 | Ross | 39 24 46 N | 082 44 46 W |
| Pleasant Hill Church | Church | 348 | Ross | 39 24 45 N | 082 44 47 W |
| Pleasant Valley | Populated Place | 228 | Ross | 39 22 21 N | 083 02 25 W |
| Pleasant Valley Christian Union Church | Church | 291 | Ross | 39 12 12 N | 083 06 31 W |
| Pleasant Valley Church | Church | 217 | Ross | 39 10 28 N | 082 48 16 W |
| Pleasant Valley Church | Church | 220 | Ross | 39 22 43 N | 083 04 09 W |
| Pleasant Valley Church (historical) | Church | 243 | Ross | 39 24 03 N | 082 50 04 W |
| Pleasant Valley School (historical) | School | 239 | Ross | 39 22 48 N | 083 04 39 W |
| Pleasant Valley Wildlife Area | Park | 240 | Ross | 39 23 18 N | 083 02 39 W |
| Plug Run | Stream | | Ross | 39 18 26 N | 083 07 39 W |
| Plum Run | Stream | | Ross | 39 30 28 N | 083 09 07 W |
| Plyley Ridge | Ridge | 329 | Ross | 39 21 08 N | 083 09 07 W |
| Poe Run | Stream | | Ross | 39 16 25 N | 082 46 12 W |
| Poe Valley (historical) | Populated Place | 200 | Ross | 39 17 48 N | 082 46 40 W |
| Point Lookout | Summit | 289 | Ross | 39 16 19 N | 082 46 22 W |
| Poke Hollow School (historical) | School | 235 | Ross | 39 19 47 N | 083 03 22 W |
| Poland Park | Park | 188 | Ross | 39 19 50 N | 082 58 35 W |
| Poole Cemetery | Cemetery | 232 | Ross | 39 21 44 N | 083 06 49 W |
| Poplar Ridge | Ridge | 329 | Ross | 39 19 38 N | 083 09 20 W |
| Porter Hollow | Valley | | Ross | 39 18 56 N | 083 12 27 W |
| Potato Ridge | Ridge | 325 | Ross | 39 11 21 N | 083 06 32 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 |
| Pricer Ridge | Ridge | 371 | Ross | 39 17 05 N | 083 18 01 W |
| Prichard School (historical) | School | 324 | Ross | 39 11 32 N | 083 07 08 W |
| Pride | Populated Place | 179 | Ross | 39 14 01 N | 082 53 45 W |
| Pride Post Office (historical) | Post Office | 182 | Ross | 39 14 00 N | 082 53 45 W |
| Proud Run | Stream | | Ross | 39 16 54 N | 083 12 42 W |
| Prussia Ridge | Ridge | 275 | Ross | 39 10 05 N | 083 00 60 W |
| Quinn Chapel African Methodist Episcopal Church | Church | 192 | Ross | 39 19 57 N | 082 59 15 W |
| Ralston Cemetery | Cemetery | 222 | Ross | 39 16 19 N | 083 03 20 W |
| Ralston Run | Stream | | Ross | 39 17 37 N | 083 02 44 W |
| Ralston Run School (historical) | School | 227 | Ross | 39 15 37 N | 083 03 02 W |
| Randall Terrace | Populated Place | 207 | Ross | 39 19 41 N | 083 00 55 W |
| Rattlesnake Knob | Summit | 322 | Ross | 39 17 11 N | 082 51 23 W |
| Rattlesnake Knob | Summit | 337 | Ross | 39 21 45 N | 082 50 06 W |
| Red School (historical) | School | 331 | Ross | 39 12 19 N | 083 09 53 W |
| Reeves Run | Stream | | Ross | 39 16 39 N | 083 08 41 W |
| Renick | Populated Place | 188 | Ross | 39 17 54 N | 082 57 14 W |
| Renick Junction | Populated Place | 183 | Ross | 39 18 47 N | 082 56 01 W |
| Rhine Hollow | Valley | | Ross | 39 13 41 N | 082 58 56 W |
| Richmond Dale | Populated Place | 181 | Ross | 39 12 07 N | 082 48 50 W |
| Richmond Dale Post Office | Post Office | 178 | Ross | 39 12 05 N | 082 48 50 W |
| Richmondale Elementary School | School | 177 | Ross | 39 12 17 N | 082 48 60 W |
| Riton (historical) | Populated Place | 189 | Ross | 39 21 10 N | 082 58 11 W |
| Rittenours | Populated Place | 183 | Ross | 39 12 59 N | 082 50 34 W |
| Roberts Cemetery | Cemetery | 325 | Ross | 39 12 23 N | 083 08 15 W |
| Rock Hill | Summit | 354 | Ross | 39 24 09 N | 082 47 09 W |
| Rocky Knob | Summit | 390 | Ross | 39 22 01 N | 082 55 06 W |
| Ross County | Civil | 208 | Ross | 39 21 00 N | 083 04 00 W |
| Ross County Airport | Airport | 219 | Ross | 39 26 26 N | 083 01 24 W |
| Ross County Courthouse | Building | 192 | Ross | 39 20 00 N | 082 58 57 W |
| Ross County Lake State Wildlife Area | Park | 244 | Ross | 39 21 30 N | 082 54 25 W |
| Ross County Museum | Building | 192 | Ross | 39 19 50 N | 082 58 58 W |
| Ross Field | Airport | 292 | Ross | 39 21 55 N | 083 21 16 W |
| Ross Lake | Reservoir | 207 | Ross | 39 20 06 N | 082 54 18 W |
| Ross Lake Dam | Dam | 207 | Ross | 39 20 06 N | 082 54 18 W |
| Ross-Pike County Tabernacle | Church | 329 | Ross | 39 11 35 N | 083 08 52 W |
| Roundtop | Summit | 356 | Ross | 39 14 41 N | 083 18 55 W |
| Roundtop | Summit | 387 | Ross | 39 17 25 N | 083 19 42 W |
| Roundtop School (historical) | School | 223 | Ross | 39 17 03 N | 083 12 33 W |
| Rouse School (historical) | School | 213 | Ross | 39 26 57 N | 083 01 27 W |
| Rowe Cemetery | Cemetery | 242 | Ross | 39 27 51 N | 083 14 17 W |
| Rowe School (historical) | School | 254 | Ross | 39 28 52 N | 083 15 46 W |
| Roxabell | Populated Place | 229 | Ross | 39 23 05 N | 083 11 16 W |
| Roxabell Post Office (historical) | Post Office | 229 | Ross | 39 23 05 N | 083 11 15 W |
| Rozelle Creek | Stream | | Ross | 39 14 48 N | 082 59 02 W |
| Rube School (historical) | School | 339 | Ross | 39 15 45 N | 083 06 07 W |
| Ruly School (historical) | School | 296 | Ross | 39 12 28 N | 083 06 38 W |