Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Haskell Park | Park | 317 | Webster | 42 30 25 N | 094 11 27 W |
| Haskin Chiropractic Clinic | Hospital | 276 | Warren | 41 28 30 N | 093 40 31 W |
| Haskins | Populated Place | 231 | Washington | 41 19 41 N | 091 32 13 W |
| Haskins (historical) | Locale | 230 | Washington | 41 19 53 N | 091 32 06 W |
| Haskins Post Office (historical) | Post Office | 231 | Washington | 41 19 41 N | 091 32 13 W |
| Hass Administrative Offices | Building | 253 | Dubuque | 42 30 33 N | 090 41 27 W |
| Hastie | Populated Place | 271 | Polk | 41 33 46 N | 093 29 23 W |
| Hastie (historical) | Locale | 271 | Polk | 41 33 46 N | 093 29 23 W |
| Hastie Post Office (historical) | Post Office | 271 | Polk | 41 33 46 N | 093 29 23 W |
| Hasting Cemetery | Cemetery | 318 | Mills | 41 00 35 N | 095 29 59 W |
| Hastings | Locale | 307 | Mills | 41 01 30 N | 095 29 56 W |
| Hastings | Populated Place | 306 | Mills | 41 01 22 N | 095 29 57 W |
| Hastings Post Office | Post Office | 307 | Mills | 41 01 25 N | 095 29 56 W |
| Hatch Post Office (historical) | Post Office | 381 | Kossuth | 43 04 55 N | 094 24 54 W |
| Hatfield Cemetery | Cemetery | 312 | Decatur | 40 41 20 N | 093 43 01 W |
| Hattery Park | Park | 305 | Story | 42 01 35 N | 093 27 12 W |
| Hattie Elston Area | Park | 433 | Dickinson | 43 23 08 N | 095 07 36 W |
| Hatton | Locale | 299 | Polk | 41 47 00 N | 093 48 37 W |
| Hatton Post Office (historical) | Post Office | 299 | Polk | 41 47 00 N | 093 48 37 W |
| Haubert Park | Park | 302 | Polk | 41 43 48 N | 093 36 42 W |
| Hauck Cemetery | Cemetery | 167 | Lee | 40 45 15 N | 091 17 16 W |
| Haug Cemetery | Cemetery | 336 | Winneshiek | 43 12 32 N | 091 57 58 W |
| Hauge Cemetery | Cemetery | 301 | Winneshiek | 43 23 33 N | 091 46 27 W |
| Hauge Church | Church | 310 | Winneshiek | 43 23 31 N | 091 46 28 W |
| Hauge Lutheran Church | Church | 340 | Wright | 42 44 14 N | 093 55 10 W |
| Haugen Timber County Park | Park | 378 | Worth | 43 16 57 N | 093 27 20 W |
| Haugen Wildlife Area | Park | 375 | Cerro Gordo | 43 12 52 N | 093 29 31 W |
| Hauger Cemetery | Cemetery | 310 | Harrison | 41 38 20 N | 096 03 01 W |
| Haugh Creek | Stream | | Fayette | 42 59 36 N | 092 03 22 W |
| Hauntown | Populated Place | 185 | Clinton | 42 00 03 N | 090 11 56 W |
| Hauntown Cemetery | Cemetery | 190 | Clinton | 41 59 20 N | 090 11 50 W |
| Haus Park | Park | 335 | Chickasaw | 43 07 09 N | 092 24 38 W |
| Hausborn/Heritage Park | Park | 408 | Carroll | 41 54 20 N | 095 02 56 W |
| Hauser Cemetery | Cemetery | 312 | Hardin | 42 15 10 N | 093 01 50 W |
| Hauser Wildlife Area | Park | 299 | Butler | 42 53 25 N | 092 36 46 W |
| Hauth Park | Park | 354 | Fayette | 42 56 11 N | 091 56 56 W |
| Havelock | Locale | 374 | Pocahontas | 42 49 52 N | 094 42 11 W |
| Havelock | Populated Place | 375 | Pocahontas | 42 50 10 N | 094 42 02 W |
| Havelock Cemetery | Cemetery | 375 | Pocahontas | 42 50 10 N | 094 42 32 W |
| Havelock Post Office | Post Office | 375 | Pocahontas | 42 50 10 N | 094 42 02 W |
| Havelock Public Library | Building | 375 | Pocahontas | 42 50 10 N | 094 42 02 W |
| Havelock Town Hall | Building | 375 | Pocahontas | 42 50 10 N | 094 42 02 W |
| Havelock Wildlife Area | Park | 378 | Pocahontas | 42 50 05 N | 094 43 11 W |
| Haven | Populated Place | 266 | Tama | 41 53 30 N | 092 28 45 W |
| Haven Cemetery | Cemetery | 273 | Tama | 41 53 28 N | 092 29 03 W |
| Haven Church | Church | 239 | Johnson | 41 33 17 N | 091 43 58 W |
| Haven Community Church | Church | 265 | Tama | 41 53 31 N | 092 28 39 W |
| Haven Park | Park | 262 | Black Hawk | 42 32 30 N | 092 26 02 W |
| Haven Post Office (historical) | Post Office | 266 | Tama | 41 53 30 N | 092 28 45 W |
| Haverhill | Populated Place | 309 | Marshall | 41 56 42 N | 092 57 39 W |
| Haverhill (historical) | Locale | 311 | Marshall | 41 56 33 N | 092 57 38 W |
| Haverhill Fire Department | Building | 309 | Marshall | 41 56 42 N | 092 57 39 W |
| Haverhill Post Office | Post Office | 309 | Marshall | 41 56 42 N | 092 57 39 W |
| Havre | Populated Place | 228 | Washington | 41 15 13 N | 091 36 37 W |
| Havre (historical) | Locale | 228 | Washington | 41 15 13 N | 091 36 37 W |
| Havre Post Office (historical) | Post Office | 228 | Washington | 41 15 13 N | 091 36 37 W |
| Haw Dental Clinic | Hospital | 322 | Bremer | 42 50 51 N | 092 05 50 W |
| Hawarden | Locale | 357 | Sioux | 42 59 47 N | 096 29 21 W |
| Hawarden | Populated Place | 360 | Sioux | 42 59 45 N | 096 29 07 W |
| Hawarden Chiropractic Health | Hospital | 362 | Sioux | 42 59 50 N | 096 28 21 W |
| Hawarden Community Church | Church | 363 | Sioux | 43 00 19 N | 096 29 04 W |
| Hawarden Community Hospital | Hospital | 366 | Sioux | 42 59 54 N | 096 28 47 W |
| Hawarden Elementary School | School | 358 | Sioux | 43 00 01 N | 096 29 00 W |
| Hawarden Family Medical Center | Hospital | 359 | Sioux | 42 59 48 N | 096 29 11 W |
| Hawarden Family Practice Clinic | Hospital | 366 | Sioux | 42 59 54 N | 096 28 47 W |
| Hawarden Feed and Grain Company Elevator | Locale | 360 | Sioux | 42 59 39 N | 096 29 07 W |
| Hawarden Golf Club | Locale | 360 | Sioux | 42 59 45 N | 096 29 07 W |
| Hawarden Municipal Airport | Airport | 362 | Sioux | 43 02 13 N | 096 29 35 W |
| Hawarden Police Department | Building | 359 | Sioux | 42 59 35 N | 096 29 06 W |
| Hawarden Post Office | Post Office | 360 | Sioux | 42 59 45 N | 096 29 05 W |
| Hawarden Public Library | Building | 358 | Sioux | 42 59 50 N | 096 28 59 W |
| Hawarden United Methodist Church | Church | 359 | Sioux | 43 00 04 N | 096 29 00 W |
| Hawk Creek | Stream | | Woodbury | 42 15 22 N | 095 45 28 W |
| Hawk Landing Strip | Airport | 340 | Fayette | 42 53 13 N | 091 56 10 W |
| Hawk Run | Stream | | Marion | 41 18 27 N | 093 09 50 W |
| Hawk Valley Wildlife Management Area | Park | 395 | Clay | 43 07 40 N | 095 04 51 W |
| Hawkeye | Populated Place | 356 | Fayette | 42 56 19 N | 091 57 01 W |
| Hawkeye (historical) | Locale | 357 | Fayette | 42 56 20 N | 091 57 15 W |
| Hawkeye Airport | Airport | 268 | Black Hawk | 42 26 05 N | 092 19 41 W |
| Hawkeye Buffalo Ranch | Locale | 329 | Chickasaw | 42 54 60 N | 092 14 19 W |
| Hawkeye Care Center | Hospital | 275 | Polk | 41 34 40 N | 093 45 41 W |
| Hawkeye Cemetery | Cemetery | 195 | Des Moines | 41 02 45 N | 091 02 51 W |
| Hawkeye Cemetery | Cemetery | 356 | Fayette | 42 56 23 N | 091 56 10 W |
| Hawkeye Center | Building | 276 | Black Hawk | 42 25 48 N | 092 19 39 W |
| Hawkeye Community College | School | 282 | Black Hawk | 42 25 50 N | 092 19 51 W |
| Hawkeye Community College Library | Building | 274 | Black Hawk | 42 25 49 N | 092 19 39 W |
| Hawkeye Cooperative Company Elevator | Locale | 356 | Fayette | 42 56 19 N | 091 57 01 W |
| Hawkeye Creek | Stream | | Des Moines | 41 01 22 N | 091 01 27 W |
| Hawkeye Creek Bridge | Bridge | 168 | Des Moines | 41 02 32 N | 091 02 43 W |
| Hawkeye Dental Studio | Hospital | 323 | Fayette | 42 40 25 N | 091 54 38 W |
| Hawkeye Dolbee Access | Locale | 164 | Des Moines | 41 01 21 N | 090 58 01 W |
| Hawkeye Downs | Locale | 227 | Linn | 41 56 03 N | 091 40 52 W |
| Hawkeye Downs Park | Park | 221 | Linn | 41 55 48 N | 091 40 46 W |
| Hawkeye Elementary School | School | 355 | Fayette | 42 56 23 N | 091 56 44 W |
| Hawkeye Library | Building | 356 | Fayette | 42 56 19 N | 091 57 01 W |
| Hawkeye Log Cabin Museum | Building | 197 | Des Moines | 40 46 35 N | 091 05 53 W |
| Hawkeye Park | Park | 300 | Polk | 41 44 03 N | 093 36 24 W |
| Hawkeye Point | Summit | 509 | Osceola | 43 27 36 N | 095 42 32 W |
| Hawkeye Post Office | Post Office | 356 | Fayette | 42 56 19 N | 091 57 01 W |
| Hawkeye School | School | 314 | Warren | 41 10 31 N | 093 30 02 W |
| Hawkeye State Wildlife Area | Park | 208 | Johnson | 41 48 03 N | 091 41 30 W |
| Hawkeye Street Underpass | Bridge | 321 | Floyd | 43 08 24 N | 093 00 21 W |
| Hawkeye-Dolbee Diversion Channel | Canal | 161 | Des Moines | 41 01 22 N | 091 01 28 W |
| Hawkins Cemetery | Cemetery | 407 | Harrison | 41 38 20 N | 095 38 41 W |
| Hawkins Game Management Area | Park | 381 | Franklin | 42 48 15 N | 093 22 51 W |
| Hawkins Landing Strip | Airport | 235 | Iowa | 41 45 02 N | 092 11 51 W |
| Hawkins Memorial Library | Building | 251 | Black Hawk | 42 18 56 N | 092 11 35 W |
| Hawks Ponds | Lake | 368 | Winneshiek | 43 28 03 N | 091 46 58 W |
| Hawks School (historical) | School | 296 | Polk | 41 45 44 N | 093 31 16 W |
| Hawley | Populated Place | 374 | Hancock | 43 12 46 N | 093 40 47 W |