Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Andrews Town House | Building | 214 | Scott | 41 32 25 N | 090 34 45 W |
| Andy Hollow | Valley | | Clayton | 42 50 43 N | 091 10 31 W |
| Andy Mountain Campground | Locale | 198 | Allamakee | 43 11 40 N | 091 09 50 W |
| Andy Williams Birthplace | Locale | 384 | Sac | 42 16 16 N | 095 05 25 W |
| Angel of Death Statue | Park | 340 | Pottawattamie | 41 16 05 N | 095 51 03 W |
| Anglers Bay | Bay | 427 | Dickinson | 43 29 50 N | 095 03 24 W |
| Anglers Bay | Bay | 427 | Dickinson | 43 29 11 N | 095 03 47 W |
| Anglers Bay Beach | Beach | 428 | Dickinson | 43 29 47 N | 095 03 31 W |
| Angus | Populated Place | 314 | Boone | 41 52 60 N | 094 09 27 W |
| Angus (historical) | Locale | 313 | Boone | 41 53 10 N | 094 09 11 W |
| Angus Cemetery | Cemetery | 304 | Greene | 41 51 57 N | 094 10 40 W |
| Angus Post Office (historical) | Post Office | 314 | Boone | 41 52 60 N | 094 09 27 W |
| Anita | Locale | 383 | Cass | 41 26 38 N | 094 45 51 W |
| Anita | Populated Place | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita City Hall | Building | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita Elementary School | School | 420 | Cass | 41 27 13 N | 094 46 11 W |
| Anita Fire Department | Building | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita High School | School | 419 | Cass | 41 27 08 N | 094 46 21 W |
| Anita Medical Center | Hospital | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita Municipal Airport | Airport | 378 | Cass | 41 26 25 N | 094 46 11 W |
| Anita Police Department | Building | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita Post Office | Post Office | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita Public Library | Building | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Anita United Methodist Church | Church | 389 | Cass | 41 26 43 N | 094 45 53 W |
| Ankeny | Locale | 305 | Polk | 41 43 35 N | 093 36 19 W |
| Ankeny | Populated Place | 302 | Polk | 41 43 47 N | 093 36 21 W |
| Ankeny Baptist Church | Church | 293 | Polk | 41 43 45 N | 093 38 16 W |
| Ankeny Christian Academy | School | 297 | Polk | 41 43 57 N | 093 37 24 W |
| Ankeny Christian Church | Church | 295 | Polk | 41 43 55 N | 093 38 01 W |
| Ankeny Church of Brethren | Church | 302 | Polk | 41 43 41 N | 093 35 59 W |
| Ankeny Church of Christ | Church | 299 | Polk | 41 43 47 N | 093 36 11 W |
| Ankeny City Hall | Building | 300 | Polk | 41 43 57 N | 093 36 20 W |
| Ankeny Clinic | Hospital | 290 | Polk | 41 44 21 N | 093 35 59 W |
| Ankeny East Elementary School | School | 291 | Polk | 41 43 49 N | 093 35 21 W |
| Ankeny Evangelical Free Church | Church | 295 | Polk | 41 43 49 N | 093 37 49 W |
| Ankeny Fire Department | Building | 302 | Polk | 41 43 56 N | 093 36 29 W |
| Ankeny First United Methodist Church | Church | 302 | Polk | 41 43 50 N | 093 36 23 W |
| Ankeny Golf and Country Club | Locale | 287 | Polk | 41 43 40 N | 093 38 31 W |
| Ankeny High School | School | 292 | Polk | 41 44 30 N | 093 36 07 W |
| Ankeny Medical Center | Hospital | 298 | Polk | 41 43 47 N | 093 37 21 W |
| Ankeny Memorial Gardens | Cemetery | 290 | Polk | 41 45 55 N | 093 36 07 W |
| Ankeny North Bound Rest Area | Locale | 287 | Polk | 41 45 08 N | 093 34 19 W |
| Ankeny Police Department | Building | 302 | Polk | 41 43 48 N | 093 36 19 W |
| Ankeny Post Office | Post Office | 290 | Polk | 41 44 25 N | 093 35 59 W |
| Ankeny Presbyterian Church | Church | 289 | Polk | 41 43 44 N | 093 35 23 W |
| Ankeny Regional Airport | Airport | 270 | Polk | 41 41 20 N | 093 33 51 W |
| Ankeny Seventh Day Adventist Church | Church | 302 | Polk | 41 43 41 N | 093 36 28 W |
| Ankeny South Bound Rest Area | Locale | 282 | Polk | 41 45 11 N | 093 34 28 W |
| Ankeny United Church of Christ | Church | 278 | Polk | 41 43 40 N | 093 34 54 W |
| Ann Gowey Cemetery | Cemetery | 216 | Washington | 41 12 00 N | 091 53 51 W |
| Annapurna Dining Hall | Building | 225 | Jefferson | 41 01 04 N | 091 57 55 W |
| Annex | Building | 390 | Winnebago | 43 15 47 N | 093 38 24 W |
| Annie Wittenmyer Complex | Building | 195 | Scott | 41 32 51 N | 090 33 12 W |
| Annieville (historical) | Locale | 418 | Clay | 43 03 47 N | 095 09 36 W |
| Annieville Post Office (historical) | Post Office | 418 | Clay | 43 03 47 N | 095 09 36 W |
| Annunciation Cemetery | Cemetery | 251 | Dubuque | 42 29 05 N | 090 53 14 W |
| ANP Foot and Ankle Clinic | Hospital | 360 | Crawford | 42 00 44 N | 095 21 14 W |
| ANP Foot and Ankle Clinic | Hospital | 380 | Shelby | 41 38 52 N | 095 19 30 W |
| ANP Foot and Ankle Clinic | Hospital | 287 | Warren | 41 21 28 N | 093 33 03 W |
| Anson Cemetery | Cemetery | 176 | Van Buren | 40 45 25 N | 091 54 56 W |
| Anson Creek | Stream | | Marshall | 42 02 31 N | 092 54 06 W |
| Anson Elementary School | School | 281 | Marshall | 42 02 07 N | 092 54 26 W |
| Anson Park | Park | 273 | Marshall | 42 02 15 N | 092 54 23 W |
| Anson Park Junior High School | School | 274 | Marshall | 42 02 13 N | 092 54 23 W |
| Anthon | Populated Place | 341 | Woodbury | 42 23 18 N | 095 52 00 W |
| Anthon (historical) | Locale | 341 | Woodbury | 42 23 15 N | 095 52 06 W |
| Anthon Chiropractic Office | Hospital | 341 | Woodbury | 42 23 17 N | 095 51 58 W |
| Anthon City Hall | Building | 342 | Woodbury | 42 23 18 N | 095 51 54 W |
| Anthon City Police | Building | 342 | Woodbury | 42 23 18 N | 095 51 54 W |
| Anthon Community Center | Building | 342 | Woodbury | 42 23 19 N | 095 51 44 W |
| Anthon Fire Department | Building | 341 | Woodbury | 42 23 22 N | 095 52 01 W |
| Anthon Golf Club | Locale | 347 | Woodbury | 42 23 30 N | 095 52 11 W |
| Anthon Mercy Medical Clinic | Hospital | 342 | Woodbury | 42 23 18 N | 095 51 53 W |
| Anthon Oto Community School | School | 341 | Woodbury | 42 23 04 N | 095 52 12 W |
| Anthon Post Office | Post Office | 341 | Woodbury | 42 23 20 N | 095 52 00 W |
| Anthon Public Library | Building | 344 | Woodbury | 42 23 18 N | 095 52 16 W |
| Antioch Baptist Church | Church | 259 | Black Hawk | 42 30 29 N | 092 19 37 W |
| Antioch Cemetery | Cemetery | 293 | Appanoose | 40 51 48 N | 092 53 51 W |
| Antioch Cemetery | Cemetery | 295 | Butler | 42 46 27 N | 092 36 48 W |
| Antioch Cemetery | Cemetery | 226 | Jefferson | 41 06 01 N | 091 54 54 W |
| Antioch Cemetery | Cemetery | 266 | Jones | 42 05 08 N | 091 12 41 W |
| Antioch Christian Church | Church | 257 | Linn | 42 03 03 N | 091 36 27 W |
| Antioch Church | Church | 292 | Butler | 42 46 26 N | 092 36 39 W |
| Antioch Church | Church | 226 | Jefferson | 41 06 01 N | 091 54 54 W |
| Antioch Church | Church | 265 | Jones | 42 05 09 N | 091 12 42 W |
| Antioch School | School | 257 | Jones | 42 05 10 N | 091 12 52 W |
| Antique Acres Campground | Locale | 268 | Black Hawk | 42 36 30 N | 092 27 16 W |
| Antique Acres Show Grounds | Locale | 268 | Black Hawk | 42 36 30 N | 092 27 16 W |
| Antique Airfield | Airport | 268 | Wapello | 40 58 40 N | 092 35 16 W |
| Antle Cemetery | Cemetery | 286 | Jasper | 41 43 01 N | 092 56 27 W |
| Antoine LeClair | Locale | 205 | Scott | 41 31 57 N | 090 34 09 W |
| Antoine LeClair Park | Park | 171 | Scott | 41 31 06 N | 090 34 49 W |
| Antoine LeClaires Reservation | Reserve | 228 | Johnson | 41 36 28 N | 091 24 01 W |
| Anton Cemetery | Cemetery | 260 | Black Hawk | 42 20 31 N | 092 14 25 W |
| Apache Park | Park | 235 | Linn | 41 58 34 N | 091 42 29 W |
| Aplington | Locale | 296 | Butler | 42 35 08 N | 092 52 57 W |
| Aplington | Populated Place | 297 | Butler | 42 35 03 N | 092 53 04 W |
| Aplington Chiropractic Clinic | Hospital | 297 | Butler | 42 35 02 N | 092 53 03 W |
| Aplington City Hall | Building | 297 | Butler | 42 35 03 N | 092 53 04 W |
| Aplington Feed and Grain Company Elevator | Locale | 297 | Butler | 42 35 03 N | 092 53 04 W |
| Aplington Middle-Elementary School | School | 311 | Butler | 42 34 46 N | 092 53 07 W |
| Aplington Parkersburg High School | School | 301 | Butler | 42 34 23 N | 092 46 43 W |
| Aplington Post Office | Post Office | 297 | Butler | 42 35 02 N | 092 53 04 W |
| Aplington Public Library | Building | 297 | Butler | 42 35 03 N | 092 53 04 W |
| Aplington Recreation Complex | Park | 297 | Butler | 42 35 03 N | 092 53 04 W |
| Apollo Central School | School | 197 | Des Moines | 40 48 37 N | 091 06 50 W |
| Apollo Post Office (historical) | Post Office | 245 | Cedar | 41 42 20 N | 091 05 01 W |
| Apostolic Assembly | Church | 176 | Scott | 41 31 35 N | 090 30 41 W |
| Apostolic Assembly of Anamoose | Church | 253 | Jones | 42 06 30 N | 091 17 07 W |
| Apostolic Cemetery | Cemetery | 262 | Clayton | 42 56 05 N | 091 34 57 W |