Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Pearl Rock | Locale | 294 | Chickasaw | 42 54 38 N | 092 32 43 W |
| Pearl Rock Canoe Launch Site | Locale | 290 | Chickasaw | 42 54 38 N | 092 32 29 W |
| Pearl Rock Catholic Cemetery | Cemetery | 309 | Chickasaw | 42 54 60 N | 092 30 01 W |
| Pearl Rock Post Office (historical) | Post Office | 294 | Chickasaw | 42 54 38 N | 092 32 43 W |
| Pearse Access | Locale | 351 | Cherokee | 42 38 50 N | 095 37 29 W |
| Pearson Hall | Building | 292 | Story | 42 01 34 N | 093 38 59 W |
| Peas Creek | Stream | | Boone | 41 59 35 N | 093 53 35 W |
| Peavey Company Elevator | Locale | 437 | Buena Vista | 42 38 28 N | 095 12 01 W |
| Peavey Company Elevator | Locale | 373 | Mitchell | 43 26 38 N | 092 47 27 W |
| Peavey Grain Company Elevator | Locale | 282 | Bremer | 42 44 02 N | 092 28 17 W |
| Peavey Grain Company Elevator | Locale | 285 | Butler | 42 46 48 N | 092 39 58 W |
| Peavey Grain Company Elevator | Locale | 299 | Pottawattamie | 41 14 08 N | 095 51 01 W |
| Pecan Grove Reserve | Park | 165 | Muscatine | 41 23 55 N | 091 06 51 W |
| Pechman Creek | Stream | | Johnson | 41 30 10 N | 091 30 28 W |
| Peck Creek | Stream | | Clayton | 42 43 30 N | 091 08 20 W |
| Peck's Ferry (historical) | Locale | 193 | Clayton | 42 43 55 N | 091 09 00 W |
| Pecks Ferry Post Office (historical) | Post Office | 193 | Clayton | 42 43 55 N | 091 09 00 W |
| Pecks Post Office (historical) | Post Office | 244 | Keokuk | 41 26 30 N | 092 18 31 W |
| Pedee | Locale | 227 | Cedar | 41 40 14 N | 091 13 15 W |
| Pedee POst Office (historical) | Post Office | 234 | Cedar | 41 40 14 N | 091 12 33 W |
| Pediatric and Adolescent Clinic | Hospital | 353 | Cerro Gordo | 43 09 30 N | 093 15 41 W |
| Pediatric Associates Center | Hospital | 203 | Johnson | 41 39 44 N | 091 31 32 W |
| Pediatric Associates Center | Hospital | 228 | Johnson | 41 41 45 N | 091 35 35 W |
| Pediatric Physicians and Surgeons Center | Hospital | 179 | Des Moines | 40 48 25 N | 091 06 22 W |
| Pee Dee Cemetery | Cemetery | 238 | Cedar | 41 40 12 N | 091 12 52 W |
| Pee Dee Creek | Stream | | Cedar | 41 39 04 N | 091 08 12 W |
| Pee Dee Creek | Stream | | Davis | 40 50 30 N | 092 34 16 W |
| Peel Island | Island | 157 | Lee | 40 40 49 N | 091 08 06 W |
| Peerson Cemetery | Cemetery | 303 | Story | 42 12 21 N | 093 34 20 W |
| Peet Junior High School | School | 266 | Black Hawk | 42 30 55 N | 092 26 23 W |
| Pegtown Cemetery | Cemetery | 228 | Des Moines | 40 58 40 N | 091 05 31 W |
| Pehlam Cemetery | Cemetery | 199 | Clinton | 41 49 08 N | 090 25 38 W |
| Peiro Bethel Cemetery | Cemetery | 351 | Woodbury | 42 20 07 N | 095 58 36 W |
| Pekay Post Office (historical) | Post Office | 241 | Mahaska | 41 12 10 N | 092 37 11 W |
| Pekin | Populated Place | 249 | Jefferson | 41 09 46 N | 092 09 35 W |
| Pekin (historical) | Locale | 249 | Jefferson | 41 09 46 N | 092 09 35 W |
| Pekin Community School | School | 249 | Jefferson | 41 09 17 N | 092 09 39 W |
| Pekin Post Office (historical) | Post Office | 249 | Jefferson | 41 09 46 N | 092 09 35 W |
| Pelican Ridge Mobile Home Community | Populated Place | 437 | Dickinson | 43 21 30 N | 095 06 46 W |
| Pelikan Park | Park | 278 | Bremer | 42 43 33 N | 092 28 32 W |
| Pella | Locale | 267 | Marion | 41 23 50 N | 092 54 39 W |
| Pella | Populated Place | 270 | Marion | 41 24 29 N | 092 54 59 W |
| Pella Christian Elementary School | School | 264 | Marion | 41 24 20 N | 092 54 33 W |
| Pella City Hall | Building | 269 | Marion | 41 24 22 N | 092 55 01 W |
| Pella Community High School | School | 260 | Marion | 41 24 03 N | 092 54 12 W |
| Pella Community Hospital | Hospital | 258 | Marion | 41 24 46 N | 092 54 45 W |
| Pella Community School | School | 272 | Marion | 41 27 59 N | 093 02 17 W |
| Pella Family Chiropractic Clinic | Hospital | 268 | Marion | 41 24 20 N | 092 55 02 W |
| Pella Foot and Ankle Clinic | Hospital | 268 | Marion | 41 24 30 N | 092 55 16 W |
| Pella Golf and Country Club | Locale | 262 | Marion | 41 25 13 N | 092 54 51 W |
| Pella High School | School | 259 | Marion | 41 24 04 N | 092 54 10 W |
| Pella Lutheran Church | Church | 266 | Marion | 41 24 09 N | 092 55 36 W |
| Pella Medical Center | Hospital | 261 | Marion | 41 24 49 N | 092 54 46 W |
| Pella Middle School | School | 265 | Marion | 41 24 23 N | 092 53 56 W |
| Pella Municipal Airport | Airport | 267 | Marion | 41 24 01 N | 092 56 44 W |
| Pella Police Department | Building | 246 | Marion | 41 24 17 N | 092 59 57 W |
| Pella Post Office | Post Office | 270 | Marion | 41 24 23 N | 092 55 07 W |
| Pella Public Library | Building | 265 | Marion | 41 24 16 N | 092 55 01 W |
| Pella Regional Health Center | Hospital | 259 | Marion | 41 24 46 N | 092 54 37 W |
| Pella State Game Management Area | Park | 250 | Marion | 41 22 12 N | 092 54 01 W |
| Pella Surgical Associates Center | Hospital | 258 | Marion | 41 24 46 N | 092 54 45 W |
| Pella United Methodist Church | Church | 259 | Marion | 41 24 11 N | 092 54 29 W |
| Pellerin Chiropractic Clinic | Hospital | 437 | O'Brien | 43 11 08 N | 095 50 41 W |
| Pellet Memorial Woods State Preserve | Park | 352 | Cass | 41 25 15 N | 095 01 31 W |
| Pelly Cemetery | Cemetery | 287 | Davis | 40 45 40 N | 092 37 41 W |
| Pemble Landing Strip | Airport | 341 | Greene | 42 11 57 N | 094 16 36 W |
| Pence Cemetery | Cemetery | 220 | Jackson | 42 04 29 N | 090 48 39 W |
| Pence Elementary School | School | 233 | Jefferson | 40 59 50 N | 091 58 16 W |
| Pendroy Cemetery | Cemetery | 249 | Marion | 41 29 30 N | 093 03 01 W |
| Penitentiary Creek | Stream | | Lee | 40 37 49 N | 091 17 42 W |
| Penn | Locale | 301 | Fayette | 42 39 26 N | 092 04 17 W |
| Penn Avenue Cemetery | Cemetery | 398 | Adair | 41 13 49 N | 094 30 15 W |
| Penn Avenue Church | Church | 407 | Adair | 41 13 49 N | 094 30 34 W |
| Penn Avenue Church of God | Church | 262 | Polk | 41 37 05 N | 093 36 04 W |
| Penn Avenue Free Methodist Church | Church | 247 | Wapello | 41 01 38 N | 092 23 37 W |
| Penn Center Cemetery | Cemetery | 345 | Madison | 41 27 40 N | 094 10 59 W |
| Penn Center Church | Locale | 348 | Madison | 41 27 38 N | 094 11 07 W |
| Penn Center School (historical) | School | 348 | Madison | 41 27 37 N | 094 11 06 W |
| Penn Central Mall | Locale | 256 | Mahaska | 41 17 42 N | 092 38 51 W |
| Penn Creek | Stream | | Delaware | 42 26 17 N | 091 14 26 W |
| Penn Hall | Building | 253 | Mahaska | 41 18 32 N | 092 38 49 W |
| Penn Meadows Park | Park | 242 | Johnson | 41 44 58 N | 091 35 33 W |
| Penn Medical Family Care Center | Hospital | 266 | Polk | 41 36 07 N | 093 36 28 W |
| Penn Post Office (historical) | Post Office | 315 | Fayette | 42 42 03 N | 092 02 34 W |
| Penn School | School | 238 | Johnson | 41 44 52 N | 091 35 43 W |
| Penn Townhall | Building | 348 | Madison | 41 27 39 N | 094 11 05 W |
| Pennington Cemetery | Cemetery | 230 | Keokuk | 41 16 37 N | 092 12 19 W |
| Penny Cemetery | Cemetery | 316 | Fremont | 40 51 00 N | 095 41 01 W |
| Penny Springs | Stream | | Allamakee | 43 08 39 N | 091 26 00 W |
| Pentecostal Apostolic Faith Church | Church | 188 | Scott | 41 31 35 N | 090 33 51 W |
| Pentecostal Assembly of God Church | Church | 165 | Lee | 40 37 55 N | 091 19 36 W |
| Pentecostal Church of God | Church | 217 | Scott | 41 31 55 N | 090 34 41 W |
| Pentecostal House of Prayer | Church | 299 | Pottawattamie | 41 15 25 N | 095 52 33 W |
| PEO Memorial Building | Building | 217 | Henry | 40 58 25 N | 091 33 26 W |
| Peoples Baptist Church | Church | 300 | Appanoose | 40 44 07 N | 092 51 56 W |
| Peoples Cemetery | Cemetery | 329 | Boone | 41 54 42 N | 093 59 20 W |
| Peoples Cemetery | Cemetery | 318 | Boone | 41 55 19 N | 094 01 07 W |
| Peoples Community Health Clinic | Hospital | 258 | Black Hawk | 42 29 55 N | 092 19 25 W |
| Peoples Memorial Hospital | Hospital | 291 | Buchanan | 42 28 13 N | 091 52 29 W |
| Peoples Unitarian Church | Church | 226 | Linn | 41 58 48 N | 091 39 45 W |
| Peoria | Populated Place | 239 | Mahaska | 41 27 43 N | 092 48 05 W |
| Peoria | Populated Place | 332 | Wayne | 40 46 59 N | 093 22 30 W |
| Peoria Cemetery | Cemetery | 249 | Mahaska | 41 27 45 N | 092 48 16 W |
| Peoria Cemetery | Cemetery | 272 | Polk | 41 51 49 N | 093 22 53 W |
| Peoria Christian Reformed Church | Church | 256 | Mahaska | 41 27 55 N | 092 48 07 W |
| Peoria Christian School | School | 256 | Mahaska | 41 27 57 N | 092 48 07 W |
| Peoria Church | Church | 281 | Polk | 41 51 41 N | 093 22 05 W |
| Peoria City | Locale | 283 | Polk | 41 51 40 N | 093 22 01 W |
| Peoria City Post Office (historical) | Post Office | 283 | Polk | 41 51 40 N | 093 22 01 W |
| Peoria Post Office (historical) | Post Office | 239 | Mahaska | 41 27 43 N | 092 48 05 W |