Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| American Institute of Business Library | Building | 264 | Polk | 41 33 44 N | 093 38 44 W |
| American Legion Country Club | Locale | 321 | Page | 40 44 55 N | 095 22 33 W |
| American Little League Field | Park | 204 | Wapello | 40 59 55 N | 092 26 15 W |
| American Lutheran Church | Church | 250 | Black Hawk | 42 18 38 N | 092 11 20 W |
| American Lutheran Church | Church | 299 | Buchanan | 42 28 18 N | 092 03 50 W |
| American Lutheran Church | Church | 482 | Osceola | 43 17 14 N | 095 36 31 W |
| American Lutheran Church | Church | 374 | Sioux | 42 59 58 N | 096 28 29 W |
| American Reformed Church | Church | 465 | O'Brien | 43 05 15 N | 095 37 32 W |
| American Reformed Church | Church | 435 | Sioux | 43 00 08 N | 096 03 23 W |
| American Reformed Church | Church | 440 | Sioux | 43 11 20 N | 096 08 04 W |
| American Republic Health Center | Building | 291 | Polk | 41 36 07 N | 093 39 38 W |
| Ames | Locale | 279 | Story | 42 01 28 N | 093 37 06 W |
| Ames | Populated Place | 287 | Story | 42 02 05 N | 093 37 12 W |
| Ames Back and Neck Care Center | Hospital | 295 | Story | 42 02 45 N | 093 37 15 W |
| Ames Christian School | School | 297 | Story | 42 01 22 N | 093 32 26 W |
| Ames Church of the Nazarene | Church | 278 | Story | 42 01 17 N | 093 36 51 W |
| Ames Community Church | Church | 289 | Story | 42 02 13 N | 093 36 39 W |
| Ames Country Club | Locale | 299 | Story | 42 04 26 N | 093 39 27 W |
| Ames Creek | Stream | | Clinton | 41 46 18 N | 090 28 51 W |
| Ames Creek Bridge | Bridge | 204 | Clinton | 41 51 03 N | 090 30 35 W |
| Ames Fire Department | Building | 290 | Story | 42 01 20 N | 093 38 59 W |
| Ames Four Square Church | Church | 293 | Story | 42 02 42 N | 093 37 21 W |
| Ames Four Square Church | Church | 280 | Story | 42 01 30 N | 093 36 51 W |
| Ames Jewish Congregation | Church | 292 | Story | 42 02 32 N | 093 37 28 W |
| Ames Mall | Locale | 272 | Story | 42 00 09 N | 093 36 25 W |
| Ames Mennonite Church | Church | 287 | Story | 42 02 05 N | 093 37 12 W |
| Ames Middle School | School | 298 | Story | 42 01 11 N | 093 39 39 W |
| Ames Municipal Airport | Airport | 280 | Story | 41 59 31 N | 093 37 18 W |
| Ames Municipal Cemetery | Cemetery | 281 | Story | 42 01 55 N | 093 36 18 W |
| Ames Oral Surgeons Center | Hospital | 284 | Story | 42 01 57 N | 093 36 42 W |
| Ames Pathology Center | Hospital | 284 | Story | 42 01 57 N | 093 36 42 W |
| Ames Police Department | Building | 280 | Story | 42 01 35 N | 093 37 02 W |
| Ames Post Office | Post Office | 281 | Story | 42 01 35 N | 093 36 51 W |
| Ames Public Library | Building | 282 | Story | 42 01 36 N | 093 36 46 W |
| Ames Public Library | Building | 305 | Story | 42 06 25 N | 093 38 29 W |
| Ames Reformed Church | Church | 292 | Story | 42 02 39 N | 093 37 51 W |
| Ames Senior High School | School | 280 | Story | 42 02 25 N | 093 38 36 W |
| Ames Seventh Day Adventist Church | Church | 288 | Story | 42 02 05 N | 093 37 14 W |
| Amish | Populated Place | 231 | Johnson | 41 32 09 N | 091 47 12 W |
| Amish Cemetery | Cemetery | 303 | Buchanan | 42 34 08 N | 092 01 22 W |
| Amish Cemetery (historical) | Cemetery | 349 | Wright | 42 41 45 N | 093 47 31 W |
| Amish Mennonite Church Cemetery | Cemetery | 245 | Davis | 40 40 30 N | 092 11 21 W |
| Amish Post Office (historical) | Post Office | 231 | Johnson | 41 32 09 N | 091 47 12 W |
| Amity Cemetery | Cemetery | 314 | Tama | 42 15 26 N | 092 35 33 W |
| Amity Church | Church | 313 | Tama | 42 15 14 N | 092 36 37 W |
| Amity Post Office (historical) | Post Office | 213 | Des Moines | 40 59 55 N | 091 04 59 W |
| Amity Post Office (historical) | Post Office | 224 | Scott | 41 38 56 N | 090 43 44 W |
| Amity School | School | 305 | Lucas | 40 58 11 N | 093 23 06 W |
| Amos Glover Historical Marker | Park | 208 | Lee | 40 35 28 N | 091 40 53 W |
| Amsterdam | Locale | 373 | Hancock | 42 55 30 N | 093 35 19 W |
| Amsterdam Cemetery | Cemetery | 373 | Hancock | 42 55 25 N | 093 35 23 W |
| Amsterdam Post Office (historical) | Post Office | 217 | Marion | 41 22 14 N | 092 57 46 W |
| Amund | Populated Place | 379 | Winnebago | 43 28 24 N | 093 47 36 W |
| Amund Post Office (historical) | Post Office | 375 | Winnebago | 43 28 20 N | 093 47 31 W |
| Amy Robertson Music Center | Building | 295 | Warren | 41 21 54 N | 093 33 47 W |
| Anamosa | Populated Place | 253 | Jones | 42 06 30 N | 091 17 07 W |
| Anamosa (historical) | Locale | 253 | Jones | 42 06 33 N | 091 17 01 W |
| Anamosa Care Center | Hospital | 249 | Jones | 42 06 13 N | 091 16 14 W |
| Anamosa City Fire Department | Building | 251 | Jones | 42 06 13 N | 091 16 34 W |
| Anamosa City Hall | Building | 256 | Jones | 42 06 27 N | 091 17 08 W |
| Anamosa Community Hospital Heliport | Airport | 269 | Jones | 42 06 46 N | 091 17 18 W |
| Anamosa Congregation - Jehovahs Witnesses | Church | 253 | Jones | 42 06 37 N | 091 17 19 W |
| Anamosa Family Practice Center | Hospital | 256 | Jones | 42 06 07 N | 091 15 48 W |
| Anamosa Penitentiary Museum | Building | 250 | Jones | 42 06 40 N | 091 17 24 W |
| Anamosa Police Department | Building | 256 | Jones | 42 06 27 N | 091 17 08 W |
| Anamosa Post Office | Post Office | 256 | Jones | 42 06 27 N | 091 17 09 W |
| Anamosa Public Library | Building | 259 | Jones | 42 06 24 N | 091 17 06 W |
| Anamosa Senior High School | School | 264 | Jones | 42 06 36 N | 091 16 20 W |
| Anamosa State Reformatory Dam | Dam | 267 | Jones | 42 07 12 N | 091 17 33 W |
| Anchor Family Health Center | Hospital | 355 | Cerro Gordo | 43 08 56 N | 093 14 46 W |
| Anchored in Faith Gospel Church | Church | 228 | Johnson | 41 43 23 N | 091 47 31 W |
| Anderson | Populated Place | 294 | Fremont | 40 48 05 N | 095 36 15 W |
| Anderson (historical) | Locale | 292 | Fremont | 40 47 50 N | 095 36 11 W |
| Anderson Cemetery | Cemetery | 215 | Davis | 40 52 00 N | 092 11 31 W |
| Anderson Cemetery | Cemetery | 237 | Johnson | 41 50 55 N | 091 40 36 W |
| Anderson Cemetery | Cemetery | 214 | Van Buren | 40 37 00 N | 091 51 31 W |
| Anderson Chiropractic Office | Hospital | 375 | Worth | 43 26 42 N | 093 13 14 W |
| Anderson Conservation Area | Park | 352 | Montgomery | 41 01 60 N | 095 11 01 W |
| Anderson Dance Pavilion | Building | 333 | Woodbury | 42 29 19 N | 096 24 31 W |
| Anderson Elementary School | School | 294 | Polk | 41 41 55 N | 093 27 55 W |
| Anderson Feeds Incorporated Elevator | Locale | 395 | Lyon | 43 16 46 N | 096 13 58 W |
| Anderson Gallery | Building | 292 | Polk | 41 36 08 N | 093 39 05 W |
| Anderson Hill Cemetery | Cemetery | 255 | Wapello | 41 06 10 N | 092 37 51 W |
| Anderson Park | Park | 241 | Benton | 42 09 35 N | 092 00 59 W |
| Anderson Park | Park | 351 | Boone | 42 03 22 N | 093 52 34 W |
| Anderson Park | Park | 247 | Linn | 41 58 55 N | 091 38 19 W |
| Anderson Park | Park | 349 | Montgomery | 40 58 44 N | 095 05 43 W |
| Anderson Park | Park | 287 | Story | 42 08 15 N | 093 33 60 W |
| Anderson Post Office (historical) | Post Office | 363 | Clayton | 42 38 50 N | 091 04 30 W |
| Anderson Post Office (historical) | Post Office | 294 | Fremont | 40 48 05 N | 095 36 15 W |
| Anderson Prairie State Preserve | Park | 400 | Emmet | 43 26 30 N | 094 52 01 W |
| Anderson School | School | 261 | Monroe | 41 00 29 N | 092 49 52 W |
| Anderson Wildlife Area | Park | 373 | Montgomery | 41 01 40 N | 095 11 01 W |
| Andover | Populated Place | 222 | Clinton | 41 58 45 N | 090 15 06 W |
| Andover (historical) | Locale | 222 | Clinton | 41 58 44 N | 090 15 07 W |
| Andover Cemetery | Cemetery | 222 | Clinton | 41 58 30 N | 090 15 10 W |
| Andover Post Office | Post Office | 222 | Clinton | 41 58 45 N | 090 15 06 W |
| Andre Cemetery | Cemetery | 269 | Cedar | 41 55 36 N | 091 21 56 W |
| Andregg Hollow | Valley | | Clayton | 42 41 39 N | 091 05 32 W |
| Andres Memorial Park | Park | 309 | Floyd | 43 03 43 N | 092 40 45 W |
| Andrew | Populated Place | 269 | Jackson | 42 09 13 N | 090 35 32 W |
| Andrew Cemetery | Cemetery | 267 | Jackson | 42 09 04 N | 090 35 22 W |
| Andrew City Hall | Building | 268 | Jackson | 42 09 12 N | 090 35 33 W |
| Andrew Community High School | School | 269 | Jackson | 42 09 09 N | 090 35 26 W |
| Andrew Fire Station | Building | 269 | Jackson | 42 09 12 N | 090 35 31 W |
| Andrew Mobile Home Park | Populated Place | 292 | Polk | 41 36 52 N | 093 42 21 W |
| Andrew Post Office | Post Office | 269 | Jackson | 42 09 15 N | 090 35 33 W |
| Andrews | Populated Place | 280 | Polk | 41 45 12 N | 093 45 26 W |
| Andrews Cemetery | Cemetery | 289 | Bremer | 42 46 38 N | 092 28 39 W |
| Andrews House | Building | 278 | Story | 42 01 25 N | 093 38 24 W |