29 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Dyer | Lake County | 16,221 |
| Danville | Hendricks County | 12,102 |
| Decatur | Adams County | 10,084 |
| Dunlap | Elkhart County | 6,940 |
| DeMotte | Jasper County | 4,336 |
| Delphi | Carroll County | 3,017 |
| Dunkirk | Jay County | 2,056 |
| Daleville | Delaware County | 1,736 |
| Dale | Spencer County | 1,508 |
| Darmstadt | Vanderburgh County | 1,426 |
| Dillsboro | Dearborn County | 1,394 |
| Dayton | Tippecanoe County | 1,376 |
| Dugger | Sullivan County | 795 |
| Darlington | Montgomery County | 724 |
| Dublin | Wayne County | 673 |
| Dana | Vermillion County | 545 |
| Denver | Miami County | 454 |
| Delaware | 432 | |
| Dubois | Dubois County | 387 |
| Dupont | Jefferson County | 337 |
| Dune Acres | Porter County | 234 |
| Deer Creek | Carroll County | 206 |
| Decker | Knox County | 201 |
| Duneland Beach | 201 | |
| Dunreith | Henry County | 171 |
| Depauw | Harrison County | 158 |
| Dresser | Vigo County | 40 |
| Dover Hill | Martin County | 34 |
| Deputy | Jefferson County | 24 |