Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Drakesville (historical) | Locale | 270 | Davis | 40 48 00 N | 092 28 48 W |
| Drakesville Cemetery | Cemetery | 270 | Davis | 40 47 41 N | 092 29 08 W |
| Drakesville Fire Department | Building | 269 | Davis | 40 47 54 N | 092 28 54 W |
| Drakesville Park | Park | 269 | Davis | 40 48 08 N | 092 28 48 W |
| Drakesville Post Office | Post Office | 269 | Davis | 40 47 54 N | 092 28 54 W |
| Dramen Post Office (historical) | Post Office | 350 | Mitchell | 43 14 50 N | 092 54 39 W |
| Draper Post Office (historical) | Post Office | 257 | Jasper | 41 31 10 N | 093 02 21 W |
| Dravis Cemetery | Cemetery | 220 | Des Moines | 40 57 10 N | 091 04 09 W |
| Dreessen Post Office (historical) | Post Office | 453 | Ida | 42 13 40 N | 095 23 31 W |
| Dresden | Populated Place | 335 | Chickasaw | 42 58 45 N | 092 19 07 W |
| Dresden | Populated Place | 278 | Poweshiek | 41 34 40 N | 092 21 21 W |
| Dresden Cemetery | Cemetery | 275 | Poweshiek | 41 33 38 N | 092 20 46 W |
| Dresden Post Office (historical) | Post Office | 335 | Chickasaw | 42 58 50 N | 092 19 07 W |
| Drew | Populated Place | 354 | Wright | 42 50 50 N | 093 48 22 W |
| Drew Post Office (historical) | Post Office | 357 | Wright | 42 51 49 N | 093 47 37 W |
| Dreyir School (historical) | School | 238 | Scott | 41 43 41 N | 090 50 16 W |
| Driesen Eye Center | Hospital | 446 | Sioux | 43 04 48 N | 096 10 31 W |
| Drillings Point | Cape | 372 | Sac | 42 18 17 N | 095 00 51 W |
| Driskill Farm Cemetery | Cemetery | 213 | Des Moines | 40 58 40 N | 091 03 21 W |
| Drummer Boy at Shiloh Historical Marker | Park | 331 | Hamilton | 42 27 30 N | 093 50 01 W |
| Drumonds Camp (historical) | Locale | 195 | Scott | 41 44 17 N | 090 42 05 W |
| Dry Branch | Stream | | Des Moines | 40 50 23 N | 091 05 59 W |
| Dry Branch | Stream | | Fayette | 43 03 04 N | 091 46 55 W |
| Dry Branch | Stream | | Marshall | 42 05 31 N | 093 00 10 W |
| Dry Branch | Stream | | Plymouth | 42 35 27 N | 096 05 32 W |
| Dry Branch | Stream | | Webster | 42 15 41 N | 093 59 43 W |
| Dry Branch School | School | 179 | Des Moines | 40 51 29 N | 091 06 28 W |
| Dry Creek | Locale | 247 | Linn | 42 04 08 N | 091 42 25 W |
| Dry Creek | Stream | | Buchanan | 42 18 02 N | 091 42 25 W |
| Dry Creek | Stream | | Buchanan | 42 25 21 N | 091 47 30 W |
| Dry Creek | Stream | | Butler | 42 46 56 N | 092 41 23 W |
| Dry Creek | Stream | | Lee | 40 37 12 N | 091 20 29 W |
| Dry Creek | Stream | | Linn | 42 02 07 N | 091 36 39 W |
| Dry Creek | Stream | | Linn | 42 04 02 N | 091 47 13 W |
| Dry Creek | Stream | | Sioux | 42 59 30 N | 096 29 24 W |
| Dry Creek | Stream | | Story | 42 07 20 N | 093 33 01 W |
| Dry Creek Post Office (historical) | Post Office | 265 | Linn | 42 03 40 N | 091 34 11 W |
| Dry Ditch | Canal | 363 | Palo Alto | 43 02 58 N | 094 37 54 W |
| Dry Hollow | Valley | | Clayton | 42 56 47 N | 091 21 27 W |
| Dry Hollow Creek | Stream | | Allamakee | 43 07 39 N | 091 19 20 W |
| Dry Lake Post Office (historical) | Post Office | 371 | Wright | 42 36 40 N | 093 34 39 W |
| Dry Mill Creek | Stream | | Clayton | 42 50 32 N | 091 22 23 W |
| Dry Mud Lake Wildlife Management Area | Park | 408 | Clay | 42 55 57 N | 094 55 54 W |
| Dry Ridge School | School | 283 | Monroe | 41 09 02 N | 092 56 21 W |
| Dry Run | Stream | | Black Hawk | 42 31 36 N | 092 26 01 W |
| Dry Run | Stream | | Bremer | 42 49 48 N | 092 30 08 W |
| Dry Run | Stream | | Fayette | 42 59 58 N | 092 00 55 W |
| Dry Run | Stream | | Fayette | 42 59 44 N | 091 39 16 W |
| Dry Run | Stream | | O'Brien | 42 58 22 N | 095 40 07 W |
| Dry Run | Stream | | O'Brien | 43 00 47 N | 095 42 17 W |
| Dry Run | Stream | | Osceola | 43 20 19 N | 095 29 34 W |
| Dry Run | Stream | | Winneshiek | 43 17 57 N | 091 48 21 W |
| Dry Run Bridge | Bridge | 212 | Clayton | 42 45 14 N | 091 22 08 W |
| Dry Run Creek | Stream | | Sioux | 43 11 13 N | 096 21 45 W |
| Dryden Post Office (historical) | Post Office | 286 | Tama | 42 01 36 N | 092 17 59 W |
| Du Marsh Area | Park | 416 | Clay | 43 07 20 N | 094 56 51 W |
| Duane Arnold Energy Center | Locale | 231 | Linn | 42 06 15 N | 091 46 38 W |
| Duane Banks Baseball Stadium | Park | 217 | Johnson | 41 39 40 N | 091 33 21 W |
| Duane Post Office (historical) | Post Office | 322 | Jones | 42 12 10 N | 091 18 01 W |
| Dublin | Locale | 233 | Washington | 41 17 35 N | 091 50 07 W |
| Dublin Dutch Creek Post Office (historical) | Post Office | 235 | Washington | 41 17 28 N | 091 52 11 W |
| Dubois Cemetery | Cemetery | 211 | Clinton | 41 50 38 N | 090 46 18 W |
| Dubugue Harbor | Bay | 180 | Dubuque | 42 29 42 N | 090 39 37 W |
| Dubuque | Populated Place | 188 | Dubuque | 42 30 02 N | 090 39 52 W |
| Dubuque Arboretum and Botanical Gardens | Park | 225 | Dubuque | 42 32 02 N | 090 42 45 W |
| Dubuque Assembly of God Church | Church | 271 | Dubuque | 42 30 06 N | 090 44 15 W |
| Dubuque City Hall | Building | 191 | Dubuque | 42 30 18 N | 090 40 03 W |
| Dubuque Country Club | Locale | 259 | Dubuque | 42 29 05 N | 090 40 54 W |
| Dubuque County | Civil | 273 | Dubuque | 42 29 00 N | 090 52 00 W |
| Dubuque County Courthouse | Building | 188 | Dubuque | 42 30 04 N | 090 39 51 W |
| Dubuque County Fairgrounds | Locale | 274 | Dubuque | 42 29 00 N | 090 46 15 W |
| Dubuque County Home | Building | 260 | Dubuque | 42 29 10 N | 090 46 30 W |
| Dubuque County Library | Building | 341 | Dubuque | 42 26 35 N | 091 00 20 W |
| Dubuque County Sheriffs Office | Building | 189 | Dubuque | 42 30 03 N | 090 39 54 W |
| Dubuque Emergency Physicians Center | Hospital | 254 | Dubuque | 42 29 32 N | 090 40 28 W |
| Dubuque Family Practice Center | Hospital | 276 | Dubuque | 42 29 48 N | 090 41 10 W |
| Dubuque Fire Department | Building | 190 | Dubuque | 42 30 09 N | 090 39 58 W |
| Dubuque Friends Worship Group | Church | 250 | Dubuque | 42 28 30 N | 090 39 20 W |
| Dubuque Greyhound Park | Park | 183 | Dubuque | 42 31 15 N | 090 38 40 W |
| Dubuque Harbor | Harbor | 180 | Dubuque | 42 29 42 N | 090 39 35 W |
| Dubuque Hills | Range | 332 | Dubuque | 42 25 00 N | 090 38 00 W |
| Dubuque Internal Medicine Center | Hospital | 276 | Dubuque | 42 29 48 N | 090 41 10 W |
| Dubuque Memorial Gardens Cemetery | Cemetery | 340 | Dubuque | 42 24 52 N | 090 43 35 W |
| Dubuque Museum of Art | Building | 197 | Dubuque | 42 29 59 N | 090 40 06 W |
| Dubuque Neurology Center | Hospital | 271 | Dubuque | 42 29 55 N | 090 41 00 W |
| Dubuque Nursing and Rehabilitation Center | Hospital | 269 | Dubuque | 42 31 00 N | 090 42 34 W |
| Dubuque Obstetrics and Gynocology Center | Hospital | 276 | Dubuque | 42 29 48 N | 090 41 10 W |
| Dubuque Pediatrics Center | Hospital | 276 | Dubuque | 42 29 48 N | 090 41 10 W |
| Dubuque Police Department | Building | 189 | Dubuque | 42 30 03 N | 090 39 54 W |
| Dubuque Post Office | Post Office | 196 | Dubuque | 42 29 55 N | 090 40 03 W |
| Dubuque Regional Airport | Airport | 323 | Dubuque | 42 24 10 N | 090 42 32 W |
| Dubuque Rescue Mission | Church | 194 | Dubuque | 42 29 50 N | 090 39 59 W |
| Dubuque Senior High School | School | 258 | Dubuque | 42 30 20 N | 090 41 36 W |
| Dubuque Yacht Basin | Harbor | 180 | Dubuque | 42 30 38 N | 090 38 58 W |
| Dubuque's Old Shot Tower Historical Marker | Park | 183 | Dubuque | 42 29 58 N | 090 39 24 W |
| Duck Creek | Stream | | Allamakee | 43 28 42 N | 091 31 09 W |
| Duck Creek | Stream | | Jackson | 42 13 55 N | 090 24 07 W |
| Duck Creek | Stream | | Scott | 41 31 25 N | 090 28 29 W |
| Duck Creek County Park | Park | 177 | Jackson | 42 13 48 N | 090 23 50 W |
| Duck Creek Golf Course | Locale | 208 | Scott | 41 32 30 N | 090 31 35 W |
| Duck Creek Mall | Locale | 208 | Scott | 41 33 26 N | 090 32 07 W |
| Duck Creek Park | Park | 192 | Scott | 41 32 38 N | 090 31 35 W |
| Duck Creek Parkway Trail | Trail | 192 | Scott | 41 33 20 N | 090 33 40 W |
| Duck Creek Plaza Shopping Center | Locale | 203 | Scott | 41 32 26 N | 090 31 10 W |
| Duck Lake | Lake | 189 | Allamakee | 43 28 32 N | 091 15 12 W |
| Duckworth Creek | Stream | | Van Buren | 40 42 38 N | 091 59 47 W |
| Dudgeon Lake State Wildlife Mgt Area | Park | 236 | Benton | 42 11 35 N | 092 01 54 W |
| Dudley | Populated Place | 209 | Wapello | 41 05 16 N | 092 35 31 W |
| Dudley Cemetery | Cemetery | 206 | Lee | 40 29 00 N | 091 27 31 W |
| Dudley Cemetery | Cemetery | 344 | Mitchell | 43 13 31 N | 092 52 29 W |