Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Prescott United Church of Christ | Church | 366 | Adams | 41 01 23 N | 094 36 50 W |
| Prescotts Creek | Stream | | Black Hawk | 42 27 18 N | 092 25 24 W |
| Presentation Sisters Cemetery | Cemetery | 244 | Dubuque | 42 26 30 N | 090 41 20 W |
| President Herbert Hoover's Birthplace Historical Marker | Park | 218 | Cedar | 41 40 09 N | 091 20 51 W |
| President Richard Nixon's Iowa Ancestor Historical Marker | Park | 290 | Warren | 41 20 55 N | 093 33 41 W |
| President's House | Building | 308 | Poweshiek | 41 45 14 N | 092 43 16 W |
| Presidents Home | Building | 284 | Black Hawk | 42 30 54 N | 092 27 22 W |
| Presidents House | Building | 283 | Linn | 41 55 34 N | 091 25 39 W |
| Presidents House | Building | 285 | Story | 42 01 24 N | 093 38 36 W |
| Presidents Residence | Building | 221 | Johnson | 41 40 05 N | 091 32 04 W |
| Presley Presbyterian Cemetery | Cemetery | 295 | Dubuque | 42 21 12 N | 090 41 52 W |
| Prestien Park | Park | 289 | Bremer | 42 40 17 N | 092 20 15 W |
| Preston | Populated Place | 197 | Jackson | 42 03 01 N | 090 24 50 W |
| Preston (historical) | Locale | 200 | Jackson | 42 03 02 N | 090 23 45 W |
| Preston Cemetery | Cemetery | 274 | Dubuque | 42 25 55 N | 090 36 40 W |
| Preston Cemetery | Cemetery | 226 | Jackson | 42 02 50 N | 090 22 32 W |
| Preston Creek | Stream | | Boone | 41 52 23 N | 093 51 56 W |
| Preston Elementary School | School | 206 | Jackson | 42 02 54 N | 090 23 51 W |
| Preston Fire Department | Building | 201 | Jackson | 42 03 00 N | 090 23 53 W |
| Preston High School | School | 209 | Jackson | 42 02 50 N | 090 23 53 W |
| Preston Police Department | Building | 201 | Jackson | 42 03 00 N | 090 23 50 W |
| Preston Post Office | Post Office | 201 | Jackson | 42 03 00 N | 090 23 49 W |
| Preston Post Office (historical) | Post Office | 299 | Dubuque | 42 22 32 N | 091 03 00 W |
| Preston Public Library | Building | 201 | Jackson | 42 03 00 N | 090 23 50 W |
| Preus Library | Building | 284 | Winneshiek | 43 18 44 N | 091 48 10 W |
| Preventative Family Dentistry Center | Hospital | 324 | Fayette | 42 40 41 N | 091 54 38 W |
| Price | Locale | 347 | Madison | 41 16 30 N | 094 01 07 W |
| Price Branch | Stream | | Clayton | 42 43 57 N | 091 09 31 W |
| Price Cemetery | Cemetery | 266 | Marion | 41 26 20 N | 093 02 14 W |
| Price Creek | Stream | | Marion | 41 19 08 N | 092 52 55 W |
| Price Laboratory School | School | 274 | Black Hawk | 42 31 15 N | 092 27 44 W |
| Price Post Office (historical) | Post Office | 423 | Audubon | 41 43 57 N | 094 45 45 W |
| Price Post Office (historical) | Post Office | 347 | Madison | 41 16 30 N | 094 01 07 W |
| Prices Creek | Stream | | Lee | 40 25 52 N | 091 23 21 W |
| Priebe Landing Field | Airport | 330 | Bremer | 42 50 16 N | 092 09 52 W |
| Priem Cemetery | Cemetery | 359 | Mitchell | 43 23 13 N | 092 58 30 W |
| Primghar | Populated Place | 465 | O'Brien | 43 05 13 N | 095 37 38 W |
| Primghar (historical) | Locale | 458 | O'Brien | 43 05 07 N | 095 37 57 W |
| Primghar Airport | Airport | 448 | O'Brien | 43 05 00 N | 095 36 46 W |
| Primghar Care Center | Hospital | 468 | O'Brien | 43 05 35 N | 095 37 29 W |
| Primghar Chiropractic Center | Hospital | 464 | O'Brien | 43 05 10 N | 095 37 40 W |
| Primghar City Park | Park | 461 | O'Brien | 43 05 02 N | 095 37 26 W |
| Primghar City Park Campground | Locale | 461 | O'Brien | 43 05 02 N | 095 37 26 W |
| Primghar Golf and Country Club | Locale | 458 | O'Brien | 43 05 18 N | 095 37 11 W |
| Primghar Post Office | Post Office | 466 | O'Brien | 43 05 07 N | 095 37 41 W |
| Primghar Public Library | Building | 464 | O'Brien | 43 05 15 N | 095 37 29 W |
| Primitive Baptist Cemetery | Cemetery | 329 | Madison | 41 21 08 N | 094 00 05 W |
| Primitive Baptist Church | Church | 279 | Linn | 42 08 42 N | 091 45 28 W |
| Primitive Baptist Church | Church | 237 | Wapello | 40 56 47 N | 092 12 14 W |
| Primitive Church | Church | 333 | Guthrie | 41 36 10 N | 094 26 31 W |
| Primitive Church | Church | 331 | Madison | 41 21 08 N | 094 00 06 W |
| Primrose | Populated Place | 216 | Lee | 40 40 32 N | 091 38 18 W |
| Primrose Cemetery | Cemetery | 215 | Lee | 40 40 05 N | 091 38 31 W |
| Primrose Post Office (historical) | Post Office | 216 | Lee | 40 40 32 N | 091 38 18 W |
| Primrose School | School | 295 | Warren | 41 10 30 N | 093 27 35 W |
| Prince of Peace Catholic Church | Church | 180 | Clinton | 41 50 33 N | 090 11 36 W |
| Prince of Peace High School | School | 180 | Clinton | 41 50 34 N | 090 11 36 W |
| Prince of Peace Lutheran Church | Church | 256 | Black Hawk | 42 28 30 N | 092 16 39 W |
| Prince of Peace Lutheran Church | Church | 333 | Cerro Gordo | 43 09 48 N | 093 11 23 W |
| Prince of Peace Lutheran Church | Church | 214 | Johnson | 41 40 56 N | 091 35 15 W |
| Prince of Peace Lutheran Church | Church | 281 | Polk | 41 37 41 N | 093 34 03 W |
| Prince of Peace Lutheran Church | Church | 220 | Scott | 41 34 27 N | 090 34 40 W |
| Prince of Peace Lutheran Church | Church | 340 | Webster | 42 29 36 N | 094 09 55 W |
| Princeton | Locale | 181 | Scott | 41 40 50 N | 090 20 25 W |
| Princeton | Populated Place | 178 | Scott | 41 40 29 N | 090 20 25 W |
| Princeton City Cemetery | Cemetery | 209 | Scott | 41 40 11 N | 090 20 42 W |
| Princeton City Hall | Building | 180 | Scott | 41 40 32 N | 090 20 32 W |
| Princeton Library | Building | 178 | Scott | 41 40 35 N | 090 20 24 W |
| Princeton Police Department | Building | 180 | Scott | 41 40 32 N | 090 20 32 W |
| Princeton Post Office | Post Office | 182 | Scott | 41 40 50 N | 090 20 29 W |
| Princeton Presbyterian Church | Church | 189 | Scott | 41 40 18 N | 090 20 33 W |
| Princeton State Wildlife Management Area | Area | 176 | Scott | 41 42 25 N | 090 20 16 W |
| Prine Cemetery | Cemetery | 257 | Mahaska | 41 19 41 N | 092 42 27 W |
| Pringle Cemetery | Cemetery | 259 | Mahaska | 41 11 50 N | 092 50 16 W |
| Printing and Publications Building | Building | 285 | Story | 42 01 57 N | 093 38 49 W |
| Pro Co-op Elevator | Locale | 375 | Pocahontas | 42 50 10 N | 094 42 02 W |
| Pro Cooperative Company Elevator | Locale | 372 | Pocahontas | 42 44 01 N | 094 40 11 W |
| Pro Cooperative Elevator | Locale | 337 | Humboldt | 42 45 33 N | 094 17 52 W |
| Pro Cooperative Elevator | Locale | 375 | Humboldt | 42 43 46 N | 094 26 34 W |
| Pro Cooperative Elevator | Locale | 343 | Humboldt | 42 48 11 N | 094 25 05 W |
| Probstei | Populated Place | 228 | Scott | 41 34 53 N | 090 39 46 W |
| Probstei School (historical) | School | 227 | Scott | 41 34 28 N | 090 39 03 W |
| Progress Park | Park | 344 | Franklin | 42 44 50 N | 093 12 39 W |
| Progressive Church | Church | 210 | Scott | 41 31 57 N | 090 33 23 W |
| Prole | Populated Place | 298 | Warren | 41 24 33 N | 093 43 38 W |
| Prole Post Office | Post Office | 298 | Warren | 41 24 33 N | 093 43 38 W |
| Promise City | Populated Place | 321 | Wayne | 40 44 51 N | 093 08 50 W |
| Promise City (historical) | Locale | 321 | Wayne | 40 44 51 N | 093 08 50 W |
| Promise City Cemetery | Cemetery | 309 | Wayne | 40 44 59 N | 093 09 26 W |
| Promise City Post Office | Post Office | 321 | Wayne | 40 44 51 N | 093 08 50 W |
| Prospect | Locale | 442 | Clay | 43 14 32 N | 095 06 56 W |
| Prospect Hill Post Office (historical) | Post Office | 285 | Linn | 42 00 30 N | 091 22 16 W |
| Prospect Hill School | School | 213 | Des Moines | 40 47 24 N | 091 06 11 W |
| Prospect Hill School (historical) | School | 238 | Muscatine | 41 34 52 N | 090 55 45 W |
| Prospect Park | Park | 348 | Pottawattamie | 41 16 40 N | 095 51 00 W |
| Prospect Park | Park | 195 | Scott | 41 31 44 N | 090 33 07 W |
| Prospect Park Baptist Church | Church | 332 | Pottawattamie | 41 16 30 N | 095 50 56 W |
| Prospect Post Office (historical) | Post Office | 442 | Clay | 43 14 32 N | 095 06 56 W |
| Prospect School | School | 215 | Muscatine | 41 25 43 N | 091 07 25 W |
| Prosper Post Office (historical) | Post Office | 305 | Butler | 42 53 20 N | 092 36 11 W |
| Prosser Cemetery | Cemetery | 403 | Emmet | 43 26 32 N | 094 46 42 W |
| Prosser Creek | Stream | | Adams | 41 11 30 N | 094 51 00 W |
| Protestant Reformed Church | Church | 267 | Marion | 41 24 25 N | 092 54 45 W |
| Protestant Reformed Church | Church | 439 | Sioux | 43 11 19 N | 096 08 01 W |
| Protestant Union Cemetery | Cemetery | 399 | Sac | 42 25 46 N | 095 08 55 W |
| Protivin | Populated Place | 351 | Howard | 43 12 58 N | 092 05 28 W |
| Protivin City Hall | Building | 351 | Howard | 43 12 58 N | 092 05 28 W |
| Protivin Post Office | Post Office | 351 | Howard | 43 12 58 N | 092 05 28 W |
| Provost Bay | Reservoir | 373 | Sac | 42 17 36 N | 095 01 58 W |
| Provost Point | Cape | 372 | Sac | 42 17 52 N | 095 02 04 W |