Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Ricord Cemetery | Cemetery | 246 | Iowa | 41 35 15 N | 091 52 41 W |
| Riddles Airstrip | Airport | 214 | Lee | 40 44 10 N | 091 20 13 W |
| Rider | Populated Place | 298 | Polk | 41 38 39 N | 093 46 11 W |
| Rider (historical) | Locale | 298 | Polk | 41 38 39 N | 093 46 11 W |
| Rider Cemetery | Cemetery | 205 | Van Buren | 40 46 00 N | 091 58 41 W |
| Rider Hall | Building | 279 | Black Hawk | 42 30 45 N | 092 27 46 W |
| Rider Post Office (historical) | Post Office | 298 | Polk | 41 38 39 N | 093 46 11 W |
| Ridge Airport | Airport | 384 | Pottawattamie | 41 21 05 N | 095 27 59 W |
| Ridge Bethel Baptist Church | Church | 268 | Black Hawk | 42 28 10 N | 092 19 51 W |
| Ridge Family Practice Center | Hospital | 375 | Pottawattamie | 41 13 57 N | 095 36 40 W |
| Ridge Family Practice Center | Hospital | 327 | Pottawattamie | 41 16 04 N | 095 50 06 W |
| Ridge Trail | Trail | 317 | Fayette | 42 51 55 N | 091 46 19 W |
| Ridgecrest Baptist Church | Church | 302 | Pottawattamie | 41 14 47 N | 095 50 49 W |
| Ridgecrest Village | Hospital | 217 | Scott | 41 33 50 N | 090 35 05 W |
| Ridgedale (historical) | Locale | 302 | Polk | 41 41 46 N | 093 42 21 W |
| Ridgedale Cemetery | Cemetery | 302 | Polk | 41 41 48 N | 093 42 21 W |
| Ridgedale Post Office (historical) | Post Office | 304 | Polk | 41 42 10 N | 093 42 21 W |
| Ridgeport | Populated Place | 369 | Boone | 42 10 37 N | 093 55 03 W |
| Ridgeview Church | Church | 225 | Scott | 41 35 26 N | 090 36 31 W |
| Ridgeview Park | Park | | Scott | 41 35 34 N | 090 36 06 W |
| Ridgeview Park | Populated Place | 224 | Scott | 41 35 33 N | 090 36 21 W |
| Ridgeway | Populated Place | 365 | Winneshiek | 43 17 52 N | 091 59 16 W |
| Ridgeway (historical) | Locale | 366 | Winneshiek | 43 17 48 N | 091 59 18 W |
| Ridgeway Cemetery | Cemetery | 369 | Winneshiek | 43 18 23 N | 092 00 23 W |
| Ridgeway Elementary School | School | 369 | Winneshiek | 43 17 40 N | 091 59 16 W |
| Ridgeway Fire House | Building | 365 | Winneshiek | 43 17 52 N | 091 59 16 W |
| Ridgeway Post Office | Post Office | 368 | Winneshiek | 43 17 48 N | 091 59 23 W |
| Ridgeway Post Office (historical) | Post Office | 384 | Guthrie | 41 31 10 N | 094 25 43 W |
| Ridgeway Roadside Park | Park | 367 | Winneshiek | 43 17 35 N | 091 58 55 W |
| Ridgeway Town Hall | Building | 368 | Winneshiek | 43 17 48 N | 091 59 23 W |
| Ridgewood Cemetery | Cemetery | 258 | Johnson | 41 46 12 N | 091 36 14 W |
| Ridgewood Cemetery | Cemetery | 356 | Pottawattamie | 41 16 10 N | 095 49 39 W |
| Ridgewood Nursing and Rehabilitation Center | Hospital | 213 | Wapello | 41 00 32 N | 092 26 51 W |
| Ridgewood Park | Park | 277 | Bremer | 42 44 20 N | 092 28 46 W |
| Ridlen Cemetery | Cemetery | 267 | Marion | 41 17 58 N | 093 03 26 W |
| Ridley | Populated Place | 356 | Clayton | 43 03 53 N | 091 30 31 W |
| Ridotto | Populated Place | 371 | Pocahontas | 42 49 46 N | 094 40 37 W |
| Rieger Creek | Stream | | Delaware | 42 30 20 N | 091 28 29 W |
| Rienow Residence Hall | Building | 217 | Johnson | 41 39 32 N | 091 32 42 W |
| Rigdon Access County Park | Park | 284 | Black Hawk | 42 34 55 N | 092 06 51 W |
| Riggs | Populated Place | 228 | Clinton | 42 00 18 N | 090 31 48 W |
| Riggs (historical) | Locale | 228 | Clinton | 42 00 18 N | 090 31 48 W |
| Riggs Post Office (historical) | Post Office | 228 | Clinton | 42 00 18 N | 090 31 48 W |
| Riley Post Office (historical) | Post Office | 320 | Clarke | 40 56 45 N | 093 55 31 W |
| Riley School | School | 293 | Polk | 41 37 17 N | 093 41 26 W |
| Rime Cemetery | Cemetery | 227 | Davis | 40 53 24 N | 092 25 44 W |
| Rinard | Populated Place | 356 | Calhoun | 42 20 23 N | 094 29 19 W |
| Rinard (historical) | Locale | 356 | Calhoun | 42 20 20 N | 094 29 11 W |
| Rinard Post Office (historical) | Post Office | 356 | Calhoun | 42 20 23 N | 094 29 19 W |
| Rinehart Airport | Airport | 283 | Iowa | 41 39 35 N | 092 17 24 W |
| Ringgold | Locale | 358 | Ringgold | 40 34 52 N | 094 11 34 W |
| Ringgold (historical) | Populated Place | 357 | Ringgold | 40 35 02 N | 094 11 31 W |
| Ringgold Cemetery | Cemetery | 354 | Ringgold | 40 35 17 N | 094 11 33 W |
| Ringgold County | Civil | 363 | Ringgold | 40 45 02 N | 094 15 03 W |
| Ringgold County Courthouse | Building | 376 | Ringgold | 40 42 52 N | 094 14 19 W |
| Ringgold County Hospital | Hospital | 372 | Ringgold | 40 42 43 N | 094 14 47 W |
| Ringgold County Sheriffs Office | Building | 375 | Ringgold | 40 43 01 N | 094 14 18 W |
| Ringgold Post Office (historical) | Post Office | 357 | Ringgold | 40 35 02 N | 094 11 31 W |
| Ringgold State Wildlife Area | Park | 321 | Ringgold | 40 35 46 N | 094 08 36 W |
| Ringham Habitat Area | Park | 401 | Emmet | 43 27 27 N | 094 52 29 W |
| Ringneck Haven | Park | 338 | Chickasaw | 43 08 40 N | 092 25 46 W |
| Ringneck Wildlife Area | Park | 326 | Bremer | 42 50 48 N | 092 19 11 W |
| Ringsaker Cemetery | Cemetery | 370 | Wright | 42 51 49 N | 093 43 29 W |
| Ringsted | Populated Place | 391 | Emmet | 43 17 41 N | 094 30 42 W |
| Ringsted (historical) | Locale | 387 | Emmet | 43 17 47 N | 094 30 30 W |
| Ringsted City Hall | Building | 391 | Emmet | 43 17 41 N | 094 30 42 W |
| Ringsted Fire Department | Building | 391 | Emmet | 43 17 41 N | 094 30 42 W |
| Ringsted Memorial Cemetery | Cemetery | 381 | Emmet | 43 18 02 N | 094 28 50 W |
| Ringsted Post Office | Post Office | 391 | Emmet | 43 17 41 N | 094 30 42 W |
| Ringsted Public Library | Building | 391 | Emmet | 43 17 41 N | 094 30 42 W |
| Rio Grande Creek | Stream | | Lyon | 43 19 60 N | 096 00 07 W |
| Rio Valley Park | Park | 266 | Polk | 41 36 24 N | 093 45 47 W |
| Ripley United Church of Christ | Church | 292 | Tama | 42 11 26 N | 092 27 57 W |
| Ripper Cemetery | Cemetery | 314 | Wayne | 40 41 45 N | 093 13 45 W |
| Ripperger Woods | Woods | 348 | Pocahontas | 42 49 20 N | 094 29 41 W |
| Rippey | Populated Place | 327 | Greene | 41 56 02 N | 094 12 05 W |
| Rippey (historical) | Locale | 324 | Greene | 41 56 05 N | 094 11 56 W |
| Rippey Cemetery | Cemetery | 329 | Greene | 41 55 18 N | 094 12 08 W |
| Rippey Post Office | Post Office | 327 | Greene | 41 56 02 N | 094 12 05 W |
| Rippey Public Library | Building | 327 | Greene | 41 56 02 N | 094 12 05 W |
| Rippey State Access Area | Park | 293 | Greene | 41 53 39 N | 094 16 37 W |
| Rippey United Methodist Church | Church | 327 | Greene | 41 56 02 N | 094 12 05 W |
| Riprap Island | Island | 178 | Jackson | 42 07 28 N | 090 11 37 W |
| Risen Christ Lutheran Church | Church | 223 | Scott | 41 35 03 N | 090 36 04 W |
| Risen Son Christian Village Center | Hospital | 352 | Pottawattamie | 41 13 50 N | 095 48 01 W |
| Rising Sun | Populated Place | 293 | Polk | 41 35 36 N | 093 28 54 W |
| Rising Sun Cemetery | Cemetery | 293 | Polk | 41 36 00 N | 093 28 56 W |
| Rising Sun Cemetery | Cemetery | 380 | Ringgold | 40 52 16 N | 094 24 24 W |
| Rising Sun Church of Christ | Church | 293 | Polk | 41 35 36 N | 093 28 54 W |
| Rising Sun Post Office (historical) | Post Office | 293 | Polk | 41 35 36 N | 093 28 54 W |
| Ritchie School | School | 345 | Webster | 42 13 28 N | 094 00 12 W |
| Rittenhouse Lake | Lake | 187 | Allamakee | 43 12 22 N | 091 07 04 W |
| Ritter | Populated Place | 436 | O'Brien | 43 14 39 N | 095 49 22 W |
| Ritter-Worth Cemetery | Cemetery | 272 | Jasper | 41 30 50 N | 093 09 11 W |
| Rittgers | Cemetery | 271 | Polk | 41 40 57 N | 093 41 02 W |
| Rittgers Cemetery | Cemetery | 269 | Polk | 41 40 56 N | 093 41 01 W |
| Ritts Area County Park | Park | 342 | Cherokee | 42 34 44 N | 095 43 06 W |
| River Bend Wildlife Area | Park | 302 | Floyd | 43 04 58 N | 092 41 36 W |
| River Birch Bottom County Park | Park | 283 | Black Hawk | 42 34 17 N | 092 06 35 W |
| River Cities Internal Medicine Center | Hospital | 180 | Clinton | 41 52 22 N | 090 10 50 W |
| River Cities Ophthalmology Center | Hospital | 186 | Lee | 40 24 25 N | 091 23 16 W |
| River Cities Opthalmology Center | Hospital | 214 | Des Moines | 40 48 38 N | 091 10 16 W |
| River City Christian Center | Church | 348 | Cerro Gordo | 43 08 55 N | 093 14 01 W |
| River City Greenbelt Trail System | Park | 355 | Cerro Gordo | 43 07 60 N | 093 17 01 W |
| River Drive Park | Park | 241 | Polk | 41 37 20 N | 093 38 19 W |
| River Drive Trail | Trail | 336 | Woodbury | 42 31 30 N | 096 29 31 W |
| River Fork Boat Ramp | Locale | 176 | Louisa | 41 16 45 N | 091 20 51 W |
| River Hills Shopping Center | Locale | 347 | Hardin | 42 30 30 N | 093 15 56 W |
| River Junction | Populated Place | 198 | Johnson | 41 29 26 N | 091 29 49 W |
| River Junction (historical) | Locale | 198 | Johnson | 41 29 26 N | 091 29 49 W |