Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Popple Island | Island | 400 | Sawyer | 45 57 39 N | 091 09 58 W |
| Popple Lake | Lake | 299 | Chippewa | 45 03 23 N | 091 18 10 W |
| Popple Lake | Lake | 496 | Forest | 45 30 03 N | 088 45 51 W |
| Popple Lake School (historical) | School | 300 | Chippewa | 45 03 04 N | 091 18 26 W |
| Popple Point Lake | Lake | 333 | Chippewa | 45 10 05 N | 091 19 57 W |
| Popple Rapids | Rapids | 382 | Florence | 45 50 14 N | 088 21 49 W |
| Popple Ridge Snowmobile Trail | Trail | 368 | Langlade | 45 08 39 N | 088 39 20 W |
| Popple Ridge Snowmobile Trail | Trail | 431 | Langlade | 45 15 17 N | 088 41 21 W |
| Popple River | Populated Place | 464 | Forest | 45 47 29 N | 088 41 06 W |
| Popple River | Stream | | Clark | 44 49 51 N | 090 37 06 W |
| Popple River | Stream | | Florence | 45 50 24 N | 088 20 24 W |
| Popple River Townhall | Building | 472 | Forest | 45 47 39 N | 088 41 45 W |
| Poppy's Rock State Natural Area | Park | 44 | Waupaca | 44 21 16 N | 088 45 36 W |
| Popuch Park | Park | 236 | Milwaukee | 43 10 18 N | 088 02 30 W |
| Poquettes Lake | Lake | 312 | Burnett | 45 48 30 N | 092 04 11 W |
| Porcupine | Populated Place | 237 | Pepin | 44 35 02 N | 092 05 45 W |
| Porcupine Cemetery | Cemetery | 249 | Pepin | 44 34 58 N | 092 06 07 W |
| Porcupine Creek | Stream | | Bayfield | 46 17 53 N | 091 09 22 W |
| Porcupine Creek | Stream | | Douglas | 46 23 11 N | 091 46 55 W |
| Porcupine Creek | Stream | | Pepin | 44 33 31 N | 092 06 14 W |
| Porcupine Lake | Lake | 405 | Bayfield | 46 17 07 N | 091 09 28 W |
| Porcupine Lake | Lake | 469 | Florence | 45 56 07 N | 088 35 22 W |
| Porcupine Lake | Lake | 407 | Marinette | 45 33 01 N | 088 22 44 W |
| Porcupine Lake | Lake | 220 | Oconto | 44 59 53 N | 088 08 20 W |
| Porcupine Lake | Lake | 485 | Oneida | 45 46 06 N | 089 39 45 W |
| Porcupine Lake | Lake | 380 | Sawyer | 46 05 25 N | 091 23 02 W |
| Porcupine Lake Wilderness | Reserve | 447 | Bayfield | 46 17 34 N | 091 08 15 W |
| Porcupine Lookout Tower | Tower | 509 | Oneida | 45 34 14 N | 089 31 45 W |
| Porcupine Mountain | Summit | 487 | Lincoln | 45 24 22 N | 089 35 18 W |
| Pork Barrel Island | Island | 401 | Sawyer | 45 56 54 N | 091 09 38 W |
| Porkey Lake | Lake | 440 | Langlade | 45 11 21 N | 088 52 20 W |
| Porky Creek | Stream | | Marathon | 44 56 05 N | 090 15 12 W |
| Porky Creek | Stream | | Taylor | 45 15 27 N | 090 07 38 W |
| Porlier School | School | 228 | Brown | 44 30 59 N | 088 06 48 W |
| Port Andrew | Populated Place | 209 | Richland | 43 12 26 N | 090 34 02 W |
| Port Arthur | Populated Place | 334 | Rusk | 45 25 45 N | 091 09 44 W |
| Port Arthur Dam (historical) | Dam | 329 | Rusk | 45 25 45 N | 091 09 38 W |
| Port Edwards | Populated Place | 297 | Wood | 44 21 03 N | 089 51 55 W |
| Port Edwards 1874C276 Dam | Dam | 289 | Wood | 44 20 60 N | 089 51 12 W |
| Port Edwards Flowage 5405 | Reservoir | 289 | Wood | 44 20 60 N | 089 51 12 W |
| Port Edwards Post Office | Post Office | 295 | Wood | 44 20 36 N | 089 51 36 W |
| Port Plaza Mall Shopping Center | Locale | 179 | Brown | 44 30 60 N | 088 00 46 W |
| Port Washington | Populated Place | 183 | Ozaukee | 43 23 14 N | 087 52 32 W |
| Port Washington High School | School | 208 | Ozaukee | 43 23 25 N | 087 52 39 W |
| Port Washington Post Office | Post Office | 186 | Ozaukee | 43 23 19 N | 087 52 14 W |
| Port Washington Yacht Club | Locale | 180 | Ozaukee | 43 23 29 N | 087 51 57 W |
| Port Wing | Populated Place | 207 | Bayfield | 46 46 29 N | 091 23 12 W |
| Port Wing 2WP954 Dam | Dam | 187 | Bayfield | 46 44 48 N | 091 29 07 W |
| Port Wing Boreal Forest State Natural Area | Park | | Bayfield | 46 47 25 N | 091 23 42 W |
| Portage | Populated Place | 242 | Columbia | 43 32 21 N | 089 27 45 W |
| Portage Canal | Canal | 238 | Columbia | 43 32 50 N | 089 26 37 W |
| Portage County | Civil | 332 | Portage | 44 28 00 N | 089 30 02 W |
| Portage County Courthouse | Building | 332 | Portage | 44 31 15 N | 089 34 50 W |
| Portage County Infirmary | Hospital | 335 | Portage | 44 30 23 N | 089 34 18 W |
| Portage County Number 35 Dam | Dam | 320 | Portage | 44 16 54 N | 089 41 48 W |
| Portage Creek | Stream | | Vilas | 46 06 10 N | 089 14 45 W |
| Portage Gospel Tabernacle (historical) | Church | 249 | Columbia | 43 32 28 N | 089 27 26 W |
| Portage High School | School | 249 | Columbia | 43 33 33 N | 089 28 02 W |
| Portage Junior High School | School | 244 | Columbia | 43 32 37 N | 089 27 50 W |
| Portage Municipal Airport | Airport | 248 | Columbia | 43 33 36 N | 089 28 58 W |
| Portage Municipal Building | Building | 248 | Columbia | 43 32 28 N | 089 27 43 W |
| Portage Park | Park | 179 | Door | 44 48 02 N | 087 18 30 W |
| Portage Point | Cape | 180 | Door | 44 48 52 N | 087 16 59 W |
| Portage Post Office | Post Office | 245 | Columbia | 43 32 25 N | 089 27 45 W |
| Portage Prairie Cemetery | Cemetery | 305 | Columbia | 43 35 19 N | 089 07 43 W |
| Portage Presbyterian Church | Church | 238 | Columbia | 43 32 27 N | 089 29 42 W |
| Portage Spring | Spring | 508 | Vilas | 46 06 27 N | 089 16 27 W |
| Porte des Morts | Channel | 176 | Door | 45 17 36 N | 086 57 31 W |
| Porter Lakes | Lake | 408 | Bayfield | 46 12 56 N | 091 15 08 W |
| Porter School | School | 299 | Lafayette | 42 36 40 N | 089 55 50 W |
| Porter School (historical) | School | 277 | Eau Claire | 44 44 28 N | 091 26 55 W |
| Porter Spring | Spring | 266 | Pierce | 44 45 52 N | 092 10 02 W |
| Porterfield | Populated Place | 202 | Marinette | 45 09 16 N | 087 47 40 W |
| Porterfield Church | Church | 213 | Marinette | 45 10 41 N | 087 46 43 W |
| Porterfield Elementary School | School | 210 | Marinette | 45 09 46 N | 087 47 37 W |
| Porters | Populated Place | 250 | Rock | 42 31 43 N | 088 57 33 W |
| Porters Bridge | Bridge | 220 | Grant | 42 48 52 N | 090 50 04 W |
| Porters Creek | Stream | | Waushara | 44 07 08 N | 089 12 35 W |
| Porters Lake | Lake | 267 | Waushara | 44 05 47 N | 089 13 20 W |
| Porters Mills (historical) | Locale | 235 | Eau Claire | 44 46 15 N | 091 34 01 W |
| Portion of Meadow Valley Flowage | Reservoir | 44 | Juneau | 44 13 42 N | 090 14 54 W |
| Portion of Meadow Valley Flowage | Reservoir | 44 | Juneau | 44 13 42 N | 090 13 18 W |
| Portion of Meadow Valley Flowage 14 | Reservoir | 44 | Juneau | 44 13 12 N | 090 17 30 W |
| Portion of Meadow Valley Flowage 14 | Reservoir | 44 | Juneau | 44 13 18 N | 090 14 54 W |
| Portion of Meadow Valley Flowage 24 | Reservoir | 44 | Juneau | 44 13 18 N | 090 15 30 W |
| Portland | Populated Place | 247 | Jefferson | 43 11 56 N | 088 58 29 W |
| Portland | Populated Place | 398 | Monroe | 43 46 08 N | 090 51 29 W |
| Portland Cemetery | Cemetery | 282 | Calumet | 44 04 29 N | 088 13 27 W |
| Portland Church | Church | 409 | Monroe | 43 46 06 N | 090 50 28 W |
| Portland Maples State Natural Area | Park | 44 | Monroe | 43 44 39 N | 090 51 34 W |
| Portland Park | Park | 269 | Dane | 43 05 51 N | 089 18 42 W |
| Posey Cemetery | Cemetery | 211 | Crawford | 43 10 52 N | 090 49 42 W |
| Posey Creek | Stream | | Monroe | 43 48 14 N | 090 32 07 W |
| Posey Lake | Lake | 497 | Lincoln | 45 27 01 N | 089 32 10 W |
| Posey Rapids | Rapids | 395 | Lincoln | 45 16 49 N | 089 47 28 W |
| Posey School (historical) | School | 208 | Crawford | 43 10 56 N | 090 49 45 W |
| Poskin | Populated Place | 364 | Barron | 45 24 33 N | 091 57 42 W |
| Poskin Cemetery | Cemetery | 367 | Barron | 45 25 26 N | 091 56 43 W |
| Poskin Church (historical) | Church | 366 | Barron | 45 25 25 N | 091 56 43 W |
| Poskin Lake | Lake | 352 | Barron | 45 25 40 N | 091 58 13 W |
| Post Hollow | Valley | | Richland | 43 16 44 N | 090 18 05 W |
| Post Lake | Populated Place | 467 | Langlade | 45 26 27 N | 089 04 49 W |
| Postville | Populated Place | 317 | Green | 42 47 57 N | 089 45 10 W |
| Postville Cemetery | Cemetery | 332 | Green | 42 47 58 N | 089 44 56 W |
| Pot Lake | Lake | 378 | Bayfield | 46 21 22 N | 091 13 15 W |
| Pot Lake | Lake | 441 | Price | 45 47 09 N | 090 40 12 W |
| Pot Lake | Lake | 448 | Price | 45 42 24 N | 090 24 59 W |
| Potato Creek | Stream | | Marathon | 45 01 47 N | 090 04 13 W |
| Potato Creek | Stream | | Rusk | 45 20 51 N | 091 19 57 W |
| Potato Creek | Stream | | Washburn | 45 53 23 N | 091 49 60 W |