Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Regis High School | School | 242 | Linn | 42 00 05 N | 091 38 50 W |
| Registry Park | Populated Place | 359 | Cerro Gordo | 43 08 45 N | 093 15 21 W |
| Reglular Baptist Church | Church | 355 | Kossuth | 43 04 59 N | 094 13 19 W |
| Reid Farm Cemetery | Cemetery | 208 | Lee | 40 38 00 N | 091 39 01 W |
| Reiff Grain and Feed Incorporated Elevator | Locale | 230 | Jefferson | 41 01 28 N | 091 58 06 W |
| Reiff Park | Park | 401 | Sac | 42 26 19 N | 095 08 53 W |
| Reilly Settlement | Populated Place | 368 | Chickasaw | 43 09 20 N | 092 10 51 W |
| Reiman Gardens | Locale | 282 | Story | 42 00 42 N | 093 38 19 W |
| Reinbeck | Populated Place | 293 | Grundy | 42 19 25 N | 092 35 58 W |
| Reinbeck (historical) | Locale | 284 | Grundy | 42 19 35 N | 092 36 01 W |
| Reinbeck City Cemetery | Cemetery | 312 | Grundy | 42 18 50 N | 092 35 51 W |
| Reinbeck Elementary School | School | 301 | Grundy | 42 19 03 N | 092 35 43 W |
| Reinbeck Family Dental Clinic | Hospital | 287 | Grundy | 42 19 30 N | 092 35 58 W |
| Reinbeck Memorial Building | Building | 289 | Grundy | 42 19 27 N | 092 35 50 W |
| Reinbeck Post Office | Post Office | 293 | Grundy | 42 19 25 N | 092 35 58 W |
| Reinbeck Post Office (historical) | Post Office | 284 | Black Hawk | 42 20 05 N | 092 34 31 W |
| Reinbeck Public Library | Building | 293 | Grundy | 42 19 25 N | 092 35 58 W |
| Reing River Access | Locale | 368 | Shelby | 41 40 45 N | 095 16 41 W |
| Reinicker | Locale | 363 | Hamilton | 42 28 38 N | 093 42 01 W |
| Reiter Wildlife Area | Park | 401 | Clay | 43 10 08 N | 095 09 09 W |
| Reitzel School | School | 291 | Monroe | 41 04 26 N | 092 50 55 W |
| Related Health Care Center | Hospital | 389 | Winnebago | 43 24 59 N | 093 31 46 W |
| Relly Point | Cape | 374 | Cerro Gordo | 43 08 07 N | 093 24 49 W |
| Rembrandt | Populated Place | 407 | Buena Vista | 42 49 32 N | 095 09 59 W |
| Rembrandt (historical) | Locale | 409 | Buena Vista | 42 49 38 N | 095 10 05 W |
| Rembrandt City Hall | Building | 407 | Buena Vista | 42 49 32 N | 095 09 59 W |
| Rembrandt Post Office | Post Office | 407 | Buena Vista | 42 49 32 N | 095 09 59 W |
| Rembrandt Public Library | Building | 407 | Buena Vista | 42 49 32 N | 095 09 59 W |
| Remicker (historical) | Populated Place | 363 | Hamilton | 42 28 38 N | 093 42 06 W |
| Remington Boat Launch | Locale | 311 | Harrison | 41 41 10 N | 096 07 11 W |
| Remsen | Locale | 403 | Plymouth | 42 48 60 N | 095 58 21 W |
| Remsen | Populated Place | 405 | Plymouth | 42 48 53 N | 095 58 24 W |
| Remsen - Union Community School | School | 414 | Plymouth | 42 48 33 N | 095 57 55 W |
| Remsen Cemetery | Cemetery | 425 | Plymouth | 42 48 21 N | 095 58 40 W |
| Remsen Chiropractic Clinic | Hospital | 406 | Plymouth | 42 48 51 N | 095 58 25 W |
| Remsen Dental Center | Hospital | 406 | Plymouth | 42 48 51 N | 095 58 25 W |
| Remsen Elementary School | School | 413 | Plymouth | 42 48 43 N | 095 58 21 W |
| Remsen Golf Course | Locale | 404 | Plymouth | 42 48 43 N | 095 58 57 W |
| Remsen Post Office | Post Office | 407 | Plymouth | 42 48 52 N | 095 58 21 W |
| Remsen Public Library | Building | 407 | Plymouth | 42 48 52 N | 095 58 18 W |
| Renner Cemetery | Cemetery | 345 | Boone | 42 08 18 N | 094 07 32 W |
| Renner Farm Cemetery | Cemetery | 204 | Des Moines | 40 50 00 N | 091 21 51 W |
| Reno | Locale | 376 | Cass | 41 11 52 N | 094 53 31 W |
| Reno Cemetery | Cemetery | 360 | Cass | 41 12 04 N | 094 53 19 W |
| Reno Post Office (historical) | Post Office | 376 | Cass | 41 11 52 N | 094 53 31 W |
| Rentz Memorial Woods State Preserve | Park | 258 | Clayton | 42 48 55 N | 091 20 30 W |
| Renwick | Locale | 352 | Humboldt | 42 49 40 N | 093 58 55 W |
| Renwick | Populated Place | 352 | Humboldt | 42 49 41 N | 093 58 52 W |
| Renwick Post Office | Post Office | 352 | Humboldt | 42 49 41 N | 093 58 52 W |
| Renwick Public Library | Building | 350 | Humboldt | 42 49 47 N | 093 58 28 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 305 | Appanoose | 40 43 49 N | 092 52 20 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 280 | Black Hawk | 42 29 47 N | 092 24 41 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 364 | Cherokee | 42 44 58 N | 095 33 06 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 342 | Clarke | 41 01 50 N | 093 45 34 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 186 | Clinton | 41 51 29 N | 090 14 47 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 198 | Clinton | 41 51 24 N | 090 14 32 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 348 | Crawford | 41 55 45 N | 095 29 37 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 382 | Crawford | 42 01 04 N | 095 20 54 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 300 | Dallas | 41 51 05 N | 094 06 26 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 346 | Decatur | 40 44 59 N | 093 44 53 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 345 | Decatur | 40 37 23 N | 093 56 26 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 286 | Decatur | 40 38 21 N | 093 48 42 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 334 | Fayette | 42 40 43 N | 091 53 50 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 379 | Fremont | 40 53 52 N | 095 40 08 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 332 | Hamilton | 42 27 11 N | 093 49 20 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 338 | Harrison | 41 44 20 N | 095 42 25 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 327 | Harrison | 41 49 57 N | 095 55 31 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 369 | Harrison | 41 34 51 N | 095 34 11 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 312 | Harrison | 41 42 29 N | 096 01 18 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 307 | Harrison | 41 33 28 N | 095 53 40 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 339 | Harrison | 41 38 36 N | 095 47 36 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 214 | Henry | 40 58 10 N | 091 33 48 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 227 | Jackson | 42 04 00 N | 090 40 45 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 225 | Johnson | 41 41 43 N | 091 35 25 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 163 | Lee | 40 37 37 N | 091 21 00 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 201 | Lee | 40 24 39 N | 091 24 21 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 259 | Linn | 42 02 08 N | 091 41 40 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 309 | Lucas | 41 00 59 N | 093 18 14 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 247 | Mahaska | 41 17 54 N | 092 38 16 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 274 | Marion | 41 18 50 N | 093 07 06 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 281 | Marshall | 42 03 10 N | 092 55 16 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 292 | Monroe | 41 01 22 N | 092 48 24 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 191 | Muscatine | 41 26 48 N | 091 03 06 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 295 | Page | 40 47 50 N | 095 21 56 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 283 | Polk | 41 37 20 N | 093 42 08 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 286 | Polk | 41 35 04 N | 093 45 53 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 322 | Pottawattamie | 41 23 18 N | 095 40 33 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 351 | Pottawattamie | 41 14 12 N | 095 25 05 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 308 | Pottawattamie | 41 21 54 N | 095 51 29 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 193 | Scott | 41 32 10 N | 090 29 25 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 237 | Scott | 41 41 40 N | 090 32 30 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 385 | Shelby | 41 39 23 N | 095 19 11 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 300 | Story | 42 01 23 N | 093 39 41 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 287 | Tama | 41 58 52 N | 092 34 44 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 388 | Union | 41 04 03 N | 094 21 51 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 289 | Warren | 41 21 56 N | 093 35 01 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 334 | Wayne | 40 45 41 N | 093 19 28 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 340 | Webster | 42 31 24 N | 094 09 19 W |
| Reorganized Church of Jesus Christ of Latter Day Saints | Church | 370 | Woodbury | 42 28 13 N | 096 21 57 W |
| Reorganized Church of Jesus Christ of Latter Day Saints - Central Congregation | Church | 311 | Pottawattamie | 41 15 52 N | 095 50 47 W |
| Reorganized Church of Jesus Christ of Latter Day Saints - Riverside Congregation | Church | 299 | Pottawattamie | 41 16 06 N | 095 53 25 W |
| Republic | Populated Place | 334 | Chickasaw | 42 57 04 N | 092 23 51 W |
| Republic Community Church | Church | 335 | Chickasaw | 42 57 03 N | 092 23 57 W |
| Republic Post Office (historical) | Post Office | 334 | Chickasaw | 42 57 04 N | 092 23 51 W |
| Reservoir Number One | Reservoir | 225 | Jefferson | 41 01 07 N | 091 57 12 W |
| Reservoir Number Two | Reservoir | 228 | Jefferson | 41 01 25 N | 091 56 52 W |
| Residence Complex | Building | 376 | Woodbury | 42 28 22 N | 096 21 43 W |
| Residence Hall | Building | 214 | Scott | 41 32 25 N | 090 34 43 W |
| Residential Care Facility | Hospital | 264 | Linn | 42 05 38 N | 091 35 05 W |
| Ressurrection Catholic Church | Church | 285 | Dubuque | 42 31 00 N | 090 44 11 W |