Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Dakota City Post Office | Post Office | 344 | Humboldt | 42 43 16 N | 094 12 07 W |
| Dakota City River Park | Park | 324 | Humboldt | 42 43 25 N | 094 11 38 W |
| Dakota Mobile Home Park | Populated Place | 222 | Johnson | 41 43 25 N | 091 45 11 W |
| Dakota Point | Summit | 394 | Woodbury | 42 33 16 N | 096 28 18 W |
| Dalander Cemetery | Cemetery | 306 | Boone | 41 53 43 N | 093 51 00 W |
| Dalby | Populated Place | 385 | Allamakee | 43 15 51 N | 091 16 26 W |
| Dalby Post Office (historical) | Post Office | 385 | Allamakee | 43 15 51 N | 091 16 26 W |
| Dale | Populated Place | 306 | Guthrie | 41 35 45 N | 094 20 31 W |
| Dale Baptist Church | Church | 287 | Appanoose | 40 43 52 N | 092 53 05 W |
| Dale Cemetery | Cemetery | 287 | Appanoose | 40 46 12 N | 092 51 28 W |
| Dale Cemetery | Cemetery | 313 | Decatur | 40 37 16 N | 093 41 38 W |
| Dale Delight Airport | Airport | 358 | Fayette | 43 04 44 N | 091 36 55 W |
| Dale G Bell Memorial Arboretum | Park | 329 | Woodbury | 42 18 20 N | 096 19 41 W |
| Dale Maffit Reservoir | Reservoir | 278 | Dallas | 41 31 08 N | 093 47 20 W |
| Dale Moffit Reservoir Cemetery | Cemetery | 262 | Dallas | 41 31 10 N | 093 48 01 W |
| Dale Post Office (historical) | Post Office | 352 | Chickasaw | 43 11 25 N | 092 10 26 W |
| Dale Post Office (historical) | Post Office | 306 | Guthrie | 41 35 45 N | 094 20 31 W |
| Dale Street Park | Park | 352 | Woodbury | 42 30 24 N | 096 23 54 W |
| Dale Townhall | Building | 436 | Lyon | 43 19 51 N | 095 55 16 W |
| Dales Ford | Populated Place | 233 | Jones | 42 12 52 N | 091 04 01 W |
| Daley Park | Park | 310 | Story | 42 01 16 N | 093 41 21 W |
| Dallas Cemetery | Cemetery | 283 | Marion | 41 14 04 N | 093 15 50 W |
| Dallas Center | Locale | 326 | Dallas | 41 41 00 N | 093 57 36 W |
| Dallas Center | Populated Place | 326 | Dallas | 41 41 04 N | 093 57 40 W |
| Dallas Center - Grimes Elementary School | School | 295 | Polk | 41 41 06 N | 093 47 44 W |
| Dallas Center Air Force Station (historical) | Military (Historical) | | Dallas | 41 43 02 N | 093 54 19 W |
| Dallas Center Cemetery | Cemetery | 349 | Taylor | 40 46 12 N | 094 52 12 W |
| Dallas Center City Hall | Building | 326 | Dallas | 41 41 03 N | 093 57 45 W |
| Dallas Center Grimes School | School | 324 | Dallas | 41 40 51 N | 093 57 43 W |
| Dallas Center Medical Associates | Hospital | 326 | Dallas | 41 41 02 N | 093 57 42 W |
| Dallas Center Post Office | Post Office | 326 | Dallas | 41 41 04 N | 093 57 40 W |
| Dallas Center School | School | 281 | Marion | 41 12 18 N | 093 16 12 W |
| Dallas Center United Methodist Church | Church | 326 | Dallas | 41 41 04 N | 093 57 40 W |
| Dallas Christian Church | Church | 288 | Marion | 41 13 57 N | 093 14 33 W |
| Dallas County | Civil | 302 | Dallas | 41 41 00 N | 094 03 01 W |
| Dallas County Care Facility | Building | 309 | Dallas | 41 39 46 N | 094 01 29 W |
| Dallas County Courthouse | Building | 271 | Dallas | 41 37 04 N | 094 01 05 W |
| Dallas County Fair Campgrounds | Locale | 268 | Dallas | 41 37 25 N | 094 01 09 W |
| Dallas County Farm Cemetery | Cemetery | 301 | Dallas | 41 39 42 N | 094 01 39 W |
| Dallas County Hospital | Hospital | 301 | Dallas | 41 50 01 N | 094 05 38 W |
| Dallas County Sheriffs Office | Building | 271 | Dallas | 41 37 06 N | 094 01 08 W |
| Dallas Elementary School | School | 288 | Marion | 41 14 03 N | 093 14 12 W |
| Dallas Lake State Wildlife Area | Park | 330 | Dallas | 41 31 58 N | 094 12 51 W |
| Dallas Post Office | Post Office | 288 | Marion | 41 13 58 N | 093 14 31 W |
| Dallas Township Cemeteries | Cemetery | 309 | Dallas | 41 50 51 N | 094 14 28 W |
| Dalmanutha | Locale | 410 | Guthrie | 41 35 25 N | 094 32 56 W |
| Dalmanutha Cemetery | Cemetery | 416 | Guthrie | 41 35 12 N | 094 33 17 W |
| Dalmanutha Post Office (historical) | Post Office | 410 | Guthrie | 41 35 25 N | 094 32 56 W |
| Dalton (historical) | Locale | 369 | Plymouth | 42 47 33 N | 096 13 29 W |
| Dalton Pond State Fishing Access Area | Park | 207 | Jackson | 42 02 17 N | 090 22 23 W |
| Dalton Post Office (historical) | Post Office | 369 | Plymouth | 42 47 33 N | 096 13 29 W |
| Dam and Lock Number 17 | Dam | 161 | Louisa | 41 11 27 N | 091 03 37 W |
| Damman Cemetery | Cemetery | 352 | Kossuth | 42 55 60 N | 094 08 21 W |
| Dammann Park | Park | 235 | Scott | 41 39 18 N | 090 35 40 W |
| Dan Green Slough | Lake | 414 | Clay | 43 13 18 N | 095 00 15 W |
| Dan Green Slough Wildlife Management Area | Park | 414 | Clay | 43 13 55 N | 094 59 36 W |
| Dan Lemme Farm Graves | Cemetery | 374 | Winnebago | 43 17 30 N | 093 49 31 W |
| Dan Post Office (historical) | Post Office | 385 | Taylor | 40 52 25 N | 094 44 25 W |
| Dana | Locale | 341 | Greene | 42 06 28 N | 094 14 19 W |
| Dana | Populated Place | 343 | Greene | 42 06 27 N | 094 14 27 W |
| Dana M Atkins Memorial Union | Building | 248 | Mahaska | 41 18 37 N | 092 38 50 W |
| Dana park | Park | 308 | Floyd | 43 04 25 N | 092 40 22 W |
| Dana Post Office | Post Office | 341 | Greene | 42 06 28 N | 094 14 26 W |
| Danbury | Populated Place | 354 | Woodbury | 42 14 03 N | 095 43 20 W |
| Danbury (historical) | Locale | 352 | Woodbury | 42 13 60 N | 095 43 16 W |
| Danbury Catholic Grade School | School | 360 | Woodbury | 42 14 15 N | 095 43 06 W |
| Danbury Cemetery | Cemetery | 393 | Woodbury | 42 14 49 N | 095 43 07 W |
| Danbury City Hall | Building | 354 | Woodbury | 42 14 04 N | 095 43 19 W |
| Danbury Fire Department | Building | 354 | Woodbury | 42 14 04 N | 095 43 19 W |
| Danbury Library | Building | 355 | Woodbury | 42 14 07 N | 095 43 19 W |
| Danbury Methodist Church | Church | 353 | Woodbury | 42 14 04 N | 095 43 14 W |
| Danbury Post Office | Post Office | 355 | Woodbury | 42 14 06 N | 095 43 19 W |
| Dance-Mor Ballroom | Building | 234 | Johnson | 41 50 40 N | 091 41 56 W |
| Dancer Hall | Building | 273 | Black Hawk | 42 31 06 N | 092 27 41 W |
| Dane Cemetery | Cemetery | 264 | Iowa | 41 39 45 N | 091 56 37 W |
| Danforth (historical) | Locale | 236 | Johnson | 41 50 52 N | 091 44 01 W |
| Danforth Chapel | Church | 197 | Johnson | 41 39 44 N | 091 32 22 W |
| Danforth Post Office (historical) | Post Office | 249 | Johnson | 41 50 56 N | 091 46 20 W |
| Daniel Davis Timber | Park | 377 | Carroll | 41 53 55 N | 094 47 56 W |
| Daniel Park Church of God | Church | 264 | Linn | 42 01 10 N | 091 41 01 W |
| Daniels and the Old Dubuque Road Historical Marker | Park | 263 | Linn | 42 02 03 N | 091 35 43 W |
| Daniels Park | Park | 234 | Linn | 41 59 50 N | 091 39 29 W |
| Danish Cemetery | Cemetery | 392 | Audubon | 41 40 07 N | 094 53 56 W |
| Danish Cemetery | Cemetery | 317 | Hamilton | 42 14 45 N | 093 36 05 W |
| Danish Cemetery | Cemetery | 354 | Webster | 42 22 07 N | 094 22 08 W |
| Danish Immigrant Museum | Building | 421 | Shelby | 41 35 35 N | 095 04 01 W |
| Danish Windmill Museum and Welcome Center | Building | 402 | Shelby | 41 35 20 N | 095 03 38 W |
| Dankwardt Memorial Park | Cemetery | 208 | Des Moines | 40 46 52 N | 091 06 08 W |
| Danville | Locale | 221 | Des Moines | 40 52 00 N | 091 18 48 W |
| Danville | Populated Place | 220 | Des Moines | 40 51 52 N | 091 18 53 W |
| Danville Care Center | Hospital | 219 | Des Moines | 40 51 45 N | 091 18 58 W |
| Danville Center | Populated Place | 216 | Des Moines | 40 51 25 N | 091 18 49 W |
| Danville Chiropractic Office | Hospital | 221 | Des Moines | 40 52 00 N | 091 18 51 W |
| Danville City Hall | Building | 220 | Des Moines | 40 51 58 N | 091 18 54 W |
| Danville Fire Department | Building | 220 | Des Moines | 40 51 58 N | 091 18 54 W |
| Danville Junior-Senior High School | School | 218 | Des Moines | 40 51 38 N | 091 18 56 W |
| Danville Police Department | Building | 220 | Des Moines | 40 51 58 N | 091 18 54 W |
| Danville Post Office | Post Office | 220 | Des Moines | 40 51 56 N | 091 19 01 W |
| Danway Cemetery | Cemetery | 417 | Shelby | 41 43 47 N | 095 11 25 W |
| Darby Gym | Building | 311 | Poweshiek | 41 44 58 N | 092 43 15 W |
| Darbyville | Populated Place | 270 | Appanoose | 40 48 58 N | 092 52 24 W |
| Darbyville Post Office (historical) | Post Office | 270 | Appanoose | 40 48 58 N | 092 52 24 W |
| Dark Chute | Stream | | Clinton | 42 01 20 N | 090 09 29 W |
| Dark Hollow | Valley | | Jackson | 42 05 45 N | 090 34 00 W |
| Dark Hollow Cemetery | Cemetery | 260 | Jackson | 42 07 27 N | 090 33 17 W |
| Dark Hollow Cemetery | Cemetery | 262 | Jackson | 42 07 28 N | 090 33 18 W |
| Darling Pool | Lake | 343 | Kossuth | 43 16 13 N | 094 06 59 W |
| Darlington Post Office (historical) | Post Office | 369 | Sioux | 43 13 32 N | 096 29 51 W |
| Darrow School (historical) | School | 383 | Howard | 43 26 34 N | 092 05 09 W |
| Darwin | Locale | 343 | Page | 40 48 50 N | 095 08 47 W |