Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Alexander Creek | Stream | | Fayette | 42 49 42 N | 091 49 02 W |
| Alexander Fire Department | Building | 387 | Franklin | 42 48 21 N | 093 28 36 W |
| Alexander Post Office | Post Office | 387 | Franklin | 42 48 21 N | 093 28 36 W |
| Alexander Public Library | Building | 387 | Franklin | 42 48 21 N | 093 28 36 W |
| Alexander-Dickman Hall | Building | 315 | Fayette | 42 50 25 N | 091 47 56 W |
| Alfrey Cemetery | Cemetery | 206 | Van Buren | 40 38 01 N | 091 43 20 W |
| Alger Cemetery | Cemetery | 214 | Clinton | 41 46 35 N | 090 44 59 W |
| Algona | Locale | 367 | Kossuth | 43 04 02 N | 094 13 31 W |
| Algona | Populated Place | 364 | Kossuth | 43 04 12 N | 094 13 59 W |
| Algona Chiropractic Clinic | Hospital | 368 | Kossuth | 43 04 06 N | 094 14 12 W |
| Algona City Hall | Building | 368 | Kossuth | 43 04 13 N | 094 14 18 W |
| Algona Evangelical Free Church | Church | 364 | Kossuth | 43 04 12 N | 094 13 59 W |
| Algona Eye Clinic | Hospital | 365 | Kossuth | 43 04 15 N | 094 14 12 W |
| Algona Fire Station | Building | 365 | Kossuth | 43 04 09 N | 094 13 44 W |
| Algona High School | School | 367 | Kossuth | 43 03 49 N | 094 13 25 W |
| Algona Manor Care Center | Hospital | 366 | Kossuth | 43 04 01 N | 094 12 29 W |
| Algona Municipal Airport | Airport | 370 | Kossuth | 43 04 40 N | 094 16 19 W |
| Algona Plaza | Locale | 341 | Kossuth | 43 05 05 N | 094 14 33 W |
| Algona Police Department | Building | 369 | Kossuth | 43 04 10 N | 094 14 19 W |
| Algona Post Office | Post Office | 364 | Kossuth | 43 04 10 N | 094 13 53 W |
| Algona Public Library | Building | 366 | Kossuth | 43 04 14 N | 094 13 36 W |
| Aliber Hall | Building | 293 | Polk | 41 36 04 N | 093 39 24 W |
| Alice | Populated Place | 263 | Linn | 42 11 51 N | 091 41 45 W |
| Alice Cemetery | Cemetery | 269 | Linn | 42 11 54 N | 091 41 42 W |
| Alice Church | Church | 330 | Grundy | 42 18 38 N | 092 52 59 W |
| Alice Post Office (historical) | Post Office | 318 | Grundy | 42 18 13 N | 092 54 50 W |
| Alice Post Office (historical) | Post Office | 263 | Linn | 42 11 51 N | 091 41 45 W |
| Alice Union Cemetery | Cemetery | 330 | Grundy | 42 18 41 N | 092 52 59 W |
| Alice United Methodist Church | Church | 269 | Linn | 42 11 56 N | 091 41 44 W |
| Alice Wyth Lake | Reservoir | 259 | Black Hawk | 42 31 50 N | 092 25 21 W |
| Alimeda | Locale | 184 | Louisa | 41 20 16 N | 091 21 14 W |
| Alix Post Office (historical) | Post Office | 337 | Montgomery | 41 05 29 N | 094 57 56 W |
| All Angels Episcopal Church | Church | 317 | Montgomery | 41 00 46 N | 095 13 38 W |
| All Nation Church of God | Church | 242 | Polk | 41 34 56 N | 093 35 43 W |
| All Nations Baptist Church | Church | 213 | Johnson | 41 38 30 N | 091 34 28 W |
| All Saints Catholic Church | Church | 367 | Guthrie | 41 30 25 N | 094 19 02 W |
| All Saints Catholic Church | Church | 258 | Linn | 41 58 41 N | 091 37 33 W |
| All Saints Catholic Church | Church | 267 | Polk | 41 39 19 N | 093 36 41 W |
| All Saints Episcopal Church | Church | 437 | Buena Vista | 42 38 28 N | 095 12 01 W |
| All Saints Lutheran Church | Church | 205 | Scott | 41 34 21 N | 090 32 32 W |
| All Saints Parish | Church | 188 | Lee | 40 23 49 N | 091 23 26 W |
| All Saints School | School | 258 | Linn | 41 58 41 N | 091 37 32 W |
| All Saints School | School | 259 | Linn | 41 58 41 N | 091 37 31 W |
| All Saints School | School | 268 | Polk | 41 37 35 N | 093 37 16 W |
| All Seasons Baptist Church | Church | 193 | Scott | 41 33 30 N | 090 27 10 W |
| All Seasons Park | Park | 257 | Polk | 41 46 30 N | 093 42 34 W |
| All Vets Golf Course | Locale | 380 | Cerro Gordo | 43 08 18 N | 093 24 59 W |
| Allamakee County | Civil | 301 | Allamakee | 43 17 00 N | 091 22 00 W |
| Allamakee County Courthouse | Building | 383 | Allamakee | 43 16 14 N | 091 28 35 W |
| Allamakee County Fairgrounds | Locale | 391 | Allamakee | 43 16 40 N | 091 28 28 W |
| Allamakee County Historical Museum | Building | 384 | Allamakee | 43 16 15 N | 091 28 31 W |
| Allamakee County Home | Building | 388 | Allamakee | 43 18 54 N | 091 27 13 W |
| Allamakee County Home Park | Park | 376 | Allamakee | 43 18 47 N | 091 27 00 W |
| Allamakee County Sheriff Office | Building | 384 | Allamakee | 43 16 15 N | 091 28 35 W |
| Allamakee Post Office (historical) | Post Office | 186 | Allamakee | 43 08 60 N | 091 09 00 W |
| Allee Chapel | Church | 277 | Linn | 41 55 30 N | 091 25 30 W |
| Alleman | Populated Place | 307 | Polk | 41 49 12 N | 093 36 42 W |
| Alleman (historical) | Locale | 308 | Polk | 41 49 12 N | 093 36 37 W |
| Alleman Creek | Stream | | Polk | 41 49 38 N | 093 38 01 W |
| Alleman Post Office | Post Office | 307 | Polk | 41 49 12 N | 093 36 42 W |
| Allen | Populated Place | 425 | Harrison | 41 48 18 N | 095 49 07 W |
| Allen Cemetery | Cemetery | 302 | Lucas | 41 00 57 N | 093 06 31 W |
| Allen College | School | 278 | Black Hawk | 42 31 47 N | 092 20 23 W |
| Allen Creek | Stream | | Pottawattamie | 41 27 11 N | 095 55 09 W |
| Allen Creek | Stream | | Webster | 42 16 46 N | 093 58 60 W |
| Allen Creek Chapel | Church | 423 | Harrison | 41 50 55 N | 095 48 31 W |
| Allen Green Refuge | Park | 157 | Des Moines | 41 00 26 N | 090 59 20 W |
| Allen House | Hospital | 394 | Cass | 41 23 25 N | 094 59 38 W |
| Allen Memorial Hospital | Hospital | 271 | Black Hawk | 42 31 36 N | 092 20 21 W |
| Allen Memorial Hospital Heliport | Airport | 272 | Black Hawk | 42 31 37 N | 092 20 23 W |
| Allen Post Office (historical) | Post Office | 425 | Harrison | 41 48 18 N | 095 49 07 W |
| Allender Chiropractic Offices | Hospital | 364 | Cherokee | 42 45 02 N | 095 33 04 W |
| Allendorf | Locale | 487 | Osceola | 43 24 48 N | 095 38 39 W |
| Allendorf | Populated Place | 486 | Osceola | 43 24 53 N | 095 38 36 W |
| Allendorf Post Office (historical) | Post Office | 486 | Osceola | 43 24 53 N | 095 38 36 W |
| Allens Grove | Locale | 215 | Scott | 41 42 00 N | 090 42 16 W |
| Allens Grove Cemetery | Cemetery | 225 | Scott | 41 42 24 N | 090 43 41 W |
| Allens Grove County Park | Park | 193 | Scott | 41 44 55 N | 090 40 51 W |
| Allens Grove Post Office (historical) | Post Office | 232 | Scott | 41 42 03 N | 090 42 29 W |
| Allens Grove School (historical) | School | 230 | Scott | 41 42 09 N | 090 42 52 W |
| Allergy and Asthma Clinic | Hospital | 201 | Des Moines | 40 48 49 N | 091 06 19 W |
| Allergy Asthma and Sinus Center | Hospital | 233 | Jefferson | 41 00 14 N | 091 57 11 W |
| Allerton | Locale | 335 | Wayne | 40 42 30 N | 093 21 55 W |
| Allerton | Populated Place | 335 | Wayne | 40 42 23 N | 093 21 55 W |
| Allerton Cemetery | Cemetery | 334 | Wayne | 40 43 13 N | 093 21 16 W |
| Allerton City Library | Building | 335 | Wayne | 40 42 23 N | 093 21 55 W |
| Allerton Post Office | Post Office | 335 | Wayne | 40 42 23 N | 093 21 55 W |
| Allerton Presbyterian Church | Church | 335 | Wayne | 40 42 23 N | 093 21 55 W |
| Alley Cemetery | Cemetery | 210 | Lee | 40 39 00 N | 091 16 31 W |
| Alliance Hmong Fellowship | Church | 252 | Polk | 41 38 22 N | 093 36 56 W |
| Alligator Lake | Lake | 178 | Jackson | 42 05 17 N | 090 10 42 W |
| Allison | Locale | 319 | Butler | 42 45 04 N | 092 47 42 W |
| Allison | Populated Place | 321 | Butler | 42 45 10 N | 092 47 43 W |
| Allison Bible Church | Church | 317 | Butler | 42 44 48 N | 092 47 41 W |
| Allison Care Center | Hospital | 321 | Butler | 42 45 21 N | 092 48 16 W |
| Allison Cemetery | Cemetery | 314 | Butler | 42 44 24 N | 092 47 22 W |
| Allison Cemetery | Cemetery | 205 | Clinton | 41 46 27 N | 090 38 46 W |
| Allison Cemetery | Cemetery | 284 | Delaware | 42 24 15 N | 091 17 31 W |
| Allison Chiropractic Office | Hospital | 322 | Butler | 42 45 18 N | 092 47 47 W |
| Allison City Hall | Building | 321 | Butler | 42 45 15 N | 092 47 42 W |
| Allison Creek | Stream | | Delaware | 42 23 17 N | 091 17 08 W |
| Allison Municipal Airport | Airport | 322 | Butler | 42 45 50 N | 092 48 16 W |
| Allison Post Office | Post Office | 319 | Butler | 42 45 02 N | 092 47 41 W |
| Allison Public Library | Building | 321 | Butler | 42 45 15 N | 092 47 42 W |
| Allison School (historical) | School | 208 | Clinton | 41 46 41 N | 090 39 19 W |
| Allison-Bristow Community School | School | 321 | Butler | 42 45 18 N | 092 48 04 W |
| Alloway Creek | Stream | | Jasper | 41 44 44 N | 092 57 08 W |
| Alma Post Office (historical) | Post Office | 300 | Jackson | 42 14 00 N | 090 50 50 W |
| Almer Noyd Wildlife Area | Park | 345 | Sac | 42 17 00 N | 094 53 36 W |
| Almira Post Office (historical) | Post Office | 302 | Delaware | 42 19 20 N | 091 22 33 W |