Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Friley Hall | Building | 289 | Story | 42 01 26 N | 093 39 01 W |
| Frink Creek | Stream | | Polk | 41 33 58 N | 093 40 33 W |
| Frink's Grove Post Office (historical) | Post Office | 258 | Buchanan | 42 19 60 N | 092 02 56 W |
| Frith Spur | Populated Place | 186 | Dubuque | 42 32 59 N | 090 42 06 W |
| Frize School (historical) | School | 279 | Polk | 41 43 53 N | 093 40 39 W |
| Froelich | Populated Place | 311 | Clayton | 43 00 24 N | 091 19 18 W |
| Froelich (historical) | Locale | 314 | Clayton | 43 00 23 N | 091 19 20 W |
| Froelich Historic Site | Locale | 312 | Clayton | 43 00 26 N | 091 19 20 W |
| Froelich Post Office (historical) | Post Office | 311 | Clayton | 43 00 24 N | 091 19 18 W |
| Frog Creek | Stream | | Dallas | 41 49 36 N | 094 06 58 W |
| Frog Hollow | Valley | | Fayette | 42 52 12 N | 091 45 21 W |
| Frog Hollow Trail | Trail | 317 | Fayette | 42 51 55 N | 091 46 19 W |
| Frog Pond School | School | 313 | Guthrie | 41 35 27 N | 094 22 34 W |
| Frost Cemetery | Cemetery | 326 | Fremont | 40 40 00 N | 095 38 51 W |
| Frost Creek | Stream | | Guthrie | 41 44 19 N | 094 36 53 W |
| Frost Grove Cemetery | Cemetery | 213 | Lee | 40 38 00 N | 091 40 01 W |
| Fruitland | Locale | 165 | Muscatine | 41 21 22 N | 091 07 46 W |
| Fruitland | Populated Place | 165 | Muscatine | 41 21 22 N | 091 07 46 W |
| Fruitland Baptist Church | Church | 165 | Muscatine | 41 21 17 N | 091 07 43 W |
| Fruitland City Hall | Building | 165 | Muscatine | 41 21 22 N | 091 07 46 W |
| Fruitland Fire Department | Building | 165 | Muscatine | 41 21 22 N | 091 07 46 W |
| Fruitland Post Office | Post Office | 165 | Muscatine | 41 21 22 N | 091 07 46 W |
| Fry Cemetery | Cemetery | 336 | Clayton | 43 00 55 N | 091 31 06 W |
| Fry Hill Cemetery | Cemetery | 307 | Lucas | 41 02 33 N | 093 26 41 W |
| Fry School | School | 268 | Lucas | 41 07 00 N | 093 20 46 W |
| Fry School | School | 269 | Lucas | 41 07 01 N | 093 20 47 W |
| Fryeburgh Post Office (historical) | Post Office | 366 | Wright | 42 43 44 N | 093 33 30 W |
| Frytown Cemetery | Cemetery | 244 | Johnson | 41 34 19 N | 091 44 08 W |
| Fudge Creek | Stream | | Wapello | 41 06 47 N | 092 33 22 W |
| Fugate Cemetery | Cemetery | 272 | Decatur | 40 35 20 N | 093 36 21 W |
| Full Faith Christian Center | Church | 316 | Lucas | 41 01 07 N | 093 18 46 W |
| Full Gospel Church | Church | 245 | Keokuk | 41 10 44 N | 092 15 07 W |
| Full Gospel Lighthouse (historical) | Church | 173 | Scott | 41 31 17 N | 090 34 50 W |
| Full Gospel Lighthouse Church | Church | 312 | Webster | 42 29 44 N | 094 11 41 W |
| Full Gospel Revival Center | Church | 220 | Washington | 41 29 32 N | 091 41 53 W |
| Full Gospel Tabernacle | Church | 301 | Page | 40 45 48 N | 095 22 30 W |
| Full Gospel Voice Church | Church | 257 | Polk | 41 33 50 N | 093 36 57 W |
| Fuller Airport | Airport | 438 | Dickinson | 43 19 59 N | 095 09 32 W |
| Fuller Park | Park | 214 | Muscatine | 41 25 25 N | 091 05 08 W |
| Fuller Post Office (historical) | Post Office | 357 | Mitchell | 43 19 13 N | 092 47 26 W |
| Fuller School | School | 302 | Monroe | 40 55 40 N | 092 48 58 W |
| Fuller's Mills Post Office (historical) | Post Office | 250 | Jones | 42 11 10 N | 091 01 21 W |
| Fullers Mill (historical) | Locale | 229 | Jones | 42 11 14 N | 091 01 44 W |
| Fullerton Park | Park | 256 | Black Hawk | 42 28 13 N | 092 17 34 W |
| Fullington Creek | Stream | | Jasper | 41 43 15 N | 093 12 31 W |
| Fulton | Populated Place | 217 | Jackson | 42 09 13 N | 090 40 41 W |
| Fulton Cemetery | Cemetery | 358 | Webster | 42 25 35 N | 094 22 09 W |
| Fulton Lutheran Church | Church | 353 | Webster | 42 24 44 N | 094 21 31 W |
| Fulton Post Office (historical) | Post Office | 217 | Jackson | 42 09 13 N | 090 40 41 W |
| Fulton School | School | 189 | Dubuque | 42 31 07 N | 090 40 26 W |
| Fulton School (historical) | School | 238 | Scott | 41 32 44 N | 090 47 03 W |
| Fulton Township Cemetery | Cemetery | 348 | Webster | 42 25 38 N | 094 18 57 W |
| Fultons Creek | Stream | | Montgomery | 41 01 38 N | 094 59 40 W |
| Fun Valley Ski Area | Locale | 280 | Poweshiek | 41 34 00 N | 092 34 56 W |
| Fundamental Gospel Church | Church | 272 | Iowa | 41 40 24 N | 092 09 46 W |
| Funk Cemetery | Cemetery | 256 | Wapello | 41 09 30 N | 092 31 01 W |
| Funk Family Cemetery | Cemetery | 241 | Mahaska | 41 12 00 N | 092 31 31 W |
| Funks Mills Post Office (historical) | Post Office | 325 | Decatur | 40 45 30 N | 093 58 51 W |
| Furay | Locale | 411 | Plymouth | 42 44 01 N | 096 25 46 W |
| Furay Post Office (historical) | Post Office | 397 | Plymouth | 42 45 53 N | 096 25 41 W |
| Furman Point | Cape | 426 | Dickinson | 43 25 07 N | 095 10 41 W |
| Furnace Hollow | Valley | | Dubuque | 42 33 19 N | 090 45 04 W |
| Furnald Island | Island | 162 | Des Moines | 40 55 19 N | 090 59 01 W |
| G and I Feed and Grain Elevator | Locale | 371 | Ringgold | 40 43 05 N | 094 14 06 W |
| G and R Feed and Grain Company Elevator | Locale | 373 | Shelby | 41 39 01 N | 095 31 07 W |
| GAA Private Airport | Airport | 188 | Clayton | 42 48 32 N | 091 05 53 W |
| Gaass Hall | Building | 267 | Marion | 41 24 08 N | 092 55 13 W |
| Gabrielson Park | Park | 411 | Buena Vista | 42 52 48 N | 095 08 59 W |
| Gabrielson Pool | Lake | 343 | Kossuth | 43 17 27 N | 094 06 47 W |
| Gabrielson Wildlife Management Area | Park | 380 | Hancock | 43 13 60 N | 093 33 41 W |
| Gaer Ballard Cemetery | Cemetery | 290 | Marshall | 42 07 45 N | 093 01 09 W |
| Gage Memorial Union | Building | 229 | Linn | 41 59 18 N | 091 39 31 W |
| Gainesborough Post Office (historical) | Post Office | 226 | Van Buren | 40 47 00 N | 091 45 26 W |
| Gainford (historical) | Locale | 257 | Mahaska | 41 15 02 N | 092 31 31 W |
| Gainford Post Office (historical) | Post Office | 257 | Mahaska | 41 15 02 N | 092 31 31 W |
| Galbraith | Locale | 353 | Kossuth | 42 58 50 N | 094 09 33 W |
| Galbraith | Populated Place | 353 | Kossuth | 42 58 50 N | 094 09 33 W |
| Galbraith Post Office (historical) | Post Office | 353 | Kossuth | 42 58 50 N | 094 09 33 W |
| Gale | Locale | 372 | Woodbury | 42 23 11 N | 095 53 46 W |
| Gale Observatory | Building | 307 | Poweshiek | 41 45 22 N | 092 43 11 W |
| Galesburg | Populated Place | 273 | Jasper | 41 33 32 N | 092 56 47 W |
| Galesburg Post Office (historical) | Post Office | 273 | Jasper | 41 33 32 N | 092 56 47 W |
| Galilean Lutheran Church | Church | 364 | Cerro Gordo | 43 08 03 N | 093 20 11 W |
| Galilee Baptist Church | Church | 246 | Polk | 41 35 48 N | 093 34 38 W |
| Galion | Locale | 370 | Cass | 41 16 04 N | 094 59 07 W |
| Galion Post Office (historical) | Post Office | 370 | Cass | 41 16 04 N | 094 59 07 W |
| Gallagher Park | Park | 287 | Bremer | 42 50 51 N | 092 32 14 W |
| Gallagher-Bluedorn Performing Arts Center | Building | 274 | Black Hawk | 42 30 40 N | 092 27 39 W |
| Galland | Populated Place | 164 | Lee | 40 30 02 N | 091 22 29 W |
| Galland (historical) | Locale | 164 | Lee | 40 30 02 N | 091 22 29 W |
| Galland Cemetery | Cemetery | 188 | Lee | 40 30 05 N | 091 22 36 W |
| Galland Post Office (historical) | Post Office | 164 | Lee | 40 30 02 N | 091 22 29 W |
| Galland School Historical Marker | Park | 179 | Lee | 40 30 05 N | 091 22 33 W |
| Galland School State Park Preserve | Park | 162 | Lee | 40 30 11 N | 091 22 32 W |
| Gallands Grove Cemetery | Cemetery | 357 | Shelby | 41 50 05 N | 095 32 11 W |
| Gallhar Cemetery | Cemetery | 214 | Des Moines | 40 58 27 N | 091 15 44 W |
| Galliher Family Cemetery | Cemetery | 210 | Jefferson | 40 58 00 N | 091 53 01 W |
| Galloway Park | Park | 264 | Black Hawk | 42 30 14 N | 092 22 46 W |
| Galls Creek | Stream | | Hancock | 43 04 02 N | 093 37 25 W |
| Galt | Locale | 366 | Wright | 42 41 32 N | 093 36 21 W |
| Galt | Populated Place | 367 | Wright | 42 41 37 N | 093 36 20 W |
| Galt Cemetery | Cemetery | 363 | Wright | 42 42 11 N | 093 35 47 W |
| Galt Post Office | Post Office | 367 | Wright | 42 41 37 N | 093 36 20 W |
| Galva | Populated Place | 396 | Ida | 42 30 25 N | 095 25 02 W |
| Galva (historical) | Locale | 394 | Ida | 42 30 30 N | 095 25 01 W |
| Galva City Cemetery | Cemetery | 418 | Ida | 42 30 11 N | 095 24 31 W |
| Galva City Fire Department | Building | 396 | Ida | 42 30 26 N | 095 25 00 W |
| Galva Lutheran Cemetery | Cemetery | 403 | Ida | 42 31 08 N | 095 25 05 W |
| Galva Post Office | Post Office | 395 | Ida | 42 30 26 N | 095 25 03 W |
| Galva Public Library | Building | 397 | Ida | 42 30 25 N | 095 24 60 W |