Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Grandview Cemetery | Cemetery | 434 | Lyon | 43 26 54 N | 096 34 53 W |
| Grandview Cemetery | Cemetery | 297 | Tama | 41 54 20 N | 092 33 10 W |
| Grandview Cemetery | Cemetery | 379 | Worth | 43 17 29 N | 093 16 46 W |
| Grandview Church | Church | 447 | Lyon | 43 26 53 N | 096 33 46 W |
| Grandview Church of Christ | Church | 273 | Polk | 41 37 11 N | 093 33 51 W |
| Grandview City Hall | Building | 217 | Louisa | 41 16 33 N | 091 11 19 W |
| Grandview Community Bible Church | Church | 217 | Louisa | 41 16 33 N | 091 11 19 W |
| Grandview Health Care Center | Hospital | 344 | Webster | 42 15 60 N | 094 03 56 W |
| Grandview Heights | Hospital | 287 | Marshall | 42 01 44 N | 092 53 52 W |
| Grandview Heights Baptist Church | Church | 248 | Dubuque | 42 28 45 N | 090 40 09 W |
| Grandview Medical Clinic | Hospital | 332 | Woodbury | 42 23 50 N | 096 21 46 W |
| Grandview Nursing Home | Hospital | 342 | Fayette | 42 40 15 N | 091 54 07 W |
| Grandview Park | Park | 412 | Clay | 43 09 56 N | 094 55 17 W |
| Grandview Park | Park | 275 | Polk | 41 37 00 N | 093 33 16 W |
| Grandview Park | Park | 395 | Woodbury | 42 31 02 N | 096 24 33 W |
| Grandview Park Congregation | Church | 284 | Polk | 41 38 25 N | 093 31 18 W |
| Grandview Post Office | Post Office | 217 | Louisa | 41 16 33 N | 091 11 19 W |
| Grandview Terrace | Hospital | 226 | Scott | 41 30 14 N | 090 38 50 W |
| Grandview Village Mobile Home Park | Populated Place | 247 | Polk | 41 37 43 N | 093 32 56 W |
| Graner Cemetery | Cemetery | 196 | Lee | 40 39 37 N | 091 28 60 W |
| Graney Bridge | Bridge | 279 | Dallas | 41 47 20 N | 094 06 05 W |
| Grange Cemetery | Cemetery | 375 | Pottawattamie | 41 26 35 N | 095 48 10 W |
| Grange Cemetery | Cemetery | 349 | Woodbury | 42 21 60 N | 096 10 01 W |
| Grange Church | Church | 377 | Pottawattamie | 41 26 39 N | 095 48 13 W |
| Grange Post Office (historical) | Post Office | 334 | Woodbury | 42 22 42 N | 096 12 56 W |
| Granger | Populated Place | 271 | Dallas | 41 45 40 N | 093 49 28 W |
| Granger (historical) | Locale | 271 | Dallas | 41 45 36 N | 093 49 36 W |
| Granger Cabin Historical Marker | Park | 429 | Dickinson | 43 22 40 N | 095 07 36 W |
| Granger City Hall | Building | 270 | Dallas | 41 45 38 N | 093 49 14 W |
| Granger Creek | Stream | | Dubuque | 42 27 51 N | 090 39 36 W |
| Granger Hill | Summit | 412 | Monona | 42 02 35 N | 095 52 44 W |
| Granger Homesteads | Populated Place | 270 | Dallas | 41 45 52 N | 093 50 21 W |
| Granger House - Marion Historical Museum | Building | 257 | Linn | 42 02 05 N | 091 35 54 W |
| Granger Manor Care Center | Hospital | 270 | Dallas | 41 45 43 N | 093 49 46 W |
| Granger Methodist Church | Church | 348 | Howard | 43 29 59 N | 092 07 60 W |
| Granger Post Office | Post Office | 270 | Dallas | 41 45 36 N | 093 49 14 W |
| Granger Public Library | Building | 270 | Dallas | 41 45 38 N | 093 49 14 W |
| Granger School | School | 284 | Polk | 41 32 45 N | 093 36 52 W |
| Granite | Populated Place | 399 | Lyon | 43 28 08 N | 096 33 23 W |
| Granite (historical) | Locale | 399 | Lyon | 43 28 08 N | 096 33 23 W |
| Granite Post Office (historical) | Post Office | 399 | Lyon | 43 28 08 N | 096 33 23 W |
| Grannis Creek | Stream | | Fayette | 42 50 05 N | 091 42 27 W |
| Grannis Creek Wildlife Management Area | Park | 346 | Fayette | 42 49 22 N | 091 42 31 W |
| Grant | Populated Place | 349 | Montgomery | 41 08 34 N | 094 59 05 W |
| Grant Access | Locale | 340 | Montgomery | 41 08 18 N | 094 58 49 W |
| Grant Bible Church | Church | 434 | O'Brien | 43 02 21 N | 095 24 30 W |
| Grant Cemetery | Cemetery | 378 | Cerro Gordo | 43 13 43 N | 093 27 03 W |
| Grant Cemetery | Cemetery | 214 | Henry | 40 59 17 N | 091 41 58 W |
| Grant Cemetery | Cemetery | 446 | Ida | 42 13 27 N | 095 27 26 W |
| Grant Cemetery | Cemetery | 401 | Monona | 42 10 36 N | 095 55 20 W |
| Grant Cemetery | Cemetery | 354 | Montgomery | 41 08 26 N | 094 59 27 W |
| Grant Cemetery | Cemetery | 452 | O'Brien | 43 04 05 N | 095 29 14 W |
| Grant Cemetery | Cemetery | 354 | Sac | 42 16 05 N | 094 53 28 W |
| Grant Center | Locale | 333 | Monona | 42 09 36 N | 096 00 00 W |
| Grant Center Country Schoolhouse (historical) | School | 374 | Ida | 42 21 15 N | 095 27 48 W |
| Grant Center Post Office (historical) | Post Office | 320 | Monona | 42 09 13 N | 095 59 59 W |
| Grant Church | Church | 378 | Winnebago | 43 16 20 N | 093 52 18 W |
| Grant City | Populated Place | 353 | Sac | 42 16 03 N | 094 53 16 W |
| Grant City Cemetery | Cemetery | 356 | Sac | 42 16 05 N | 094 53 26 W |
| Grant City Hall | Building | 349 | Montgomery | 41 08 34 N | 094 59 05 W |
| Grant City Post Office (historical) | Post Office | 353 | Sac | 42 16 03 N | 094 53 16 W |
| Grant County Park | Park | 341 | Sac | 42 15 57 N | 094 53 44 W |
| Grant Elementary School | School | 291 | Monroe | 41 01 16 N | 092 48 28 W |
| Grant Field | Park | 217 | Johnson | 41 39 44 N | 091 33 31 W |
| Grant Fire Department | Building | 349 | Montgomery | 41 08 34 N | 094 59 05 W |
| Grant Number 5 School | School | 388 | Carroll | 42 04 44 N | 094 48 08 W |
| Grant Park Christian Church | Church | 245 | Polk | 41 35 41 N | 093 34 14 W |
| Grant Post Office (historical) | Post Office | 351 | Montgomery | 41 08 47 N | 094 59 08 W |
| Grant School | School | 267 | Black Hawk | 42 30 33 N | 092 19 21 W |
| Grant School | School | 345 | Cerro Gordo | 43 08 45 N | 093 12 32 W |
| Grant School | School | 251 | Linn | 41 57 04 N | 091 39 60 W |
| Grant School | School | 350 | Madison | 41 15 28 N | 094 02 34 W |
| Grant School | School | 253 | Mahaska | 41 17 52 N | 092 38 11 W |
| Grant School | School | 210 | Muscatine | 41 26 16 N | 091 03 15 W |
| Grant School | School | 196 | Muscatine | 41 26 42 N | 091 03 14 W |
| Grant School | School | 349 | Woodbury | 42 30 30 N | 096 22 08 W |
| Grant Townhall | Building | 384 | Cerro Gordo | 43 12 50 N | 093 26 15 W |
| Grant Townhall | Building | 438 | Lyon | 43 21 37 N | 095 55 11 W |
| Grant Townhall | Building | 433 | O'Brien | 43 02 23 N | 095 26 51 W |
| Grant Township Cemetery | Cemetery | 315 | Grundy | 42 23 41 N | 092 37 54 W |
| Grant Township Cemetery | Cemetery | 456 | Lyon | 43 23 25 N | 095 53 57 W |
| Grant Township Cemetery | Cemetery | 384 | Pocahontas | 42 39 26 N | 094 41 60 W |
| Grant Township Cemetery | Cemetery | 375 | Winnebago | 43 16 12 N | 093 52 55 W |
| Grant Township Wildlife Area | Park | 369 | Winnebago | 43 16 40 N | 093 55 19 W |
| Grant View Cemetery | Cemetery | 345 | Delaware | 42 34 58 N | 091 19 58 W |
| Grant Wood Elementary School | School | 214 | Johnson | 41 38 04 N | 091 30 26 W |
| Grant Wood Elementary School | School | 256 | Linn | 41 58 44 N | 091 37 55 W |
| Grant Wood School | School | 198 | Scott | 41 33 04 N | 090 30 44 W |
| Grants Creek | Stream | | Lee | 40 33 06 N | 091 40 13 W |
| Grants School | School | 201 | Scott | 41 32 53 N | 090 34 32 W |
| Granville | Populated Place | 442 | Sioux | 42 59 08 N | 095 52 25 W |
| Granville (historical) | Locale | 441 | Sioux | 42 59 13 N | 095 52 26 W |
| Granville (historical) | Populated Place | 252 | Mahaska | 41 29 46 N | 092 46 28 W |
| Granville Creek | Stream | | Sioux | 42 57 54 N | 095 57 19 W |
| Granville Post Office | Post Office | 442 | Sioux | 42 59 09 N | 095 52 21 W |
| Grape Chute | Stream | | Lee | 40 39 07 N | 091 10 48 W |
| Grape Community Hospital | Hospital | 294 | Fremont | 40 37 14 N | 095 39 02 W |
| Grape Community Hospital Heliport | Airport | 301 | Fremont | 40 37 21 N | 095 38 59 W |
| Grape Creek | Stream | | Lee | 40 28 26 N | 091 28 51 W |
| Grape Island | Island | 158 | Lee | 40 39 34 N | 091 09 33 W |
| Graper Cemetery | Cemetery | 215 | Johnson | 41 35 30 N | 091 43 21 W |
| Grass Lake (historical) | Lake | 398 | Emmet | 43 28 53 N | 094 45 27 W |
| Grass Lake State Game Management Area | Park | 398 | Emmet | 43 28 54 N | 094 45 25 W |
| Grassy Lane School (historical) | School | 180 | Scott | 41 42 48 N | 090 21 15 W |
| Grave of a Napoleonic War Veteran Historical Marker | Park | 295 | Winneshiek | 43 05 58 N | 091 53 37 W |
| Grave of Chief Push-E-To-Qua Historical Marker | Park | 276 | Tama | 41 58 23 N | 092 37 33 W |
| Grave of Chief Waubonsie Historical Marker | Park | 347 | Fremont | 40 55 25 N | 095 42 31 W |
| Grave of Eli Hoover Historical Marker | Park | 329 | Hardin | 42 17 58 N | 093 18 03 W |
| Grave of Kalawequois Historical Marker | Park | 162 | Lee | 40 32 13 N | 091 25 21 W |
| Grave Yard Point Cemetery | Cemetery | 213 | Washington | 41 25 38 N | 091 29 11 W |