| City | County | 2026 Pop. ↓ |
|---|---|---|
| Dyer | Lake County | 16,218 |
| Danville | Hendricks County | 13,870 |
| Decatur | Adams County | 10,127 |
| Dunlap | Elkhart County | 6,687 |
| DeMotte | Jasper County | 4,418 |
| Delphi | Carroll County | 2,983 |
| Dunkirk | Jay County | 2,085 |
| Daleville | Delaware County | 1,719 |
| Dale | Spencer County | 1,515 |
| Darmstadt | Vanderburgh County | 1,453 |
| Dillsboro | Dearborn County | 1,377 |
| Dayton | Tippecanoe County | 1,375 |
| Dugger | Sullivan County | 796 |
| Darlington | Montgomery County | 728 |
| Dublin | Wayne County | 675 |
| Dana | Vermillion County | 554 |
| Delaware | Ripley County | 539 |
| Denver | Miami County | 462 |
| Dubois | Dubois County | 378 |
| Dupont | Jefferson County | 340 |
| Deer Creek | Carroll County | 260 |
| Dune Acres | Porter County | 229 |
| Decker | Knox County | 197 |
| Duneland Beach | LaPorte County | 172 |
| Dunreith | Henry County | 172 |
| Depauw | Harrison County | 121 |
| Donaldson | Marshall County | 54 |
| Dover Hill | Martin County | 52 |
| Dresser | Vigo County | 34 |
| Deputy | Jefferson County | 14 |