29 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Dyer | Lake County | 16,301 |
| Danville | Hendricks County | 12,996 |
| Decatur | Adams County | 10,106 |
| Dunlap | Elkhart County | 6,940 |
| DeMotte | Jasper County | 4,304 |
| Delphi | Carroll County | 3,030 |
| Dunkirk | Jay County | 2,092 |
| Daleville | Delaware County | 1,726 |
| Dale | Spencer County | 1,529 |
| Darmstadt | Vanderburgh County | 1,427 |
| Dillsboro | Dearborn County | 1,391 |
| Dayton | Tippecanoe County | 1,383 |
| Dugger | Sullivan County | 794 |
| Darlington | Montgomery County | 723 |
| Dublin | Wayne County | 676 |
| Dana | Vermillion County | 552 |
| Denver | Miami County | 463 |
| Delaware | 432 | |
| Dubois | Dubois County | 387 |
| Dupont | Jefferson County | 337 |
| Dune Acres | Porter County | 230 |
| Deer Creek | Carroll County | 206 |
| Duneland Beach | 201 | |
| Decker | Knox County | 198 |
| Dunreith | Henry County | 170 |
| Depauw | Harrison County | 158 |
| Dresser | Vigo County | 40 |
| Dover Hill | Martin County | 34 |
| Deputy | Jefferson County | 24 |