City | 2024 Population |
|---|---|
| Dallas | 438 |
| Dalton | 1,922 |
| Damascus | 112 |
| Danbury | 4,850 |
| Danville | 988 |
| Darby | 4,410 |
| Darbydale | 877 |
| Darbyville | 190 |
| Darrtown | 808 |
| Day Heights | 2,080 |
| Dayton | 134,850 |
| De Graff | 1,251 |
| Decatur | 603 |
| Deer Creek | 915 |
| Deer Park | 5,309 |
| Deercreek | 1,675 |
| Deerfield | 818 |
| Deersville | 64 |
| Defiance | 17,042 |
| Delaware | 46,306 |
| Delaware City | 42,395 |
| Delhi | 28,014 |
| Delhi Hills | 5,155 |
| Dellroy | 264 |
| Delphos | 7,044 |
| Delshire | 3,674 |
| Delta | 3,298 |
| Denmark | 805 |
| Dennison | 2,641 |
| Dent | 11,657 |
| Derby | 529 |
| Deshler | 1,559 |
| Devola | 2,745 |
| Dexter City | 78 |
| Dillonvale | 594 |
| Dinsmore | 3,335 |
| Dixon | 530 |
| Dodson | 2,557 |
| Dola | 131 |
| Donnelsville | 253 |
| Dorset | 792 |
| Dover | 12,916 |
| Doylestown | 3,054 |
| Dresden | 1,644 |
| Drexel | 631 |
| Dry Ridge | 4,337 |
| Dry Run | 7,337 |
| Dublin | 48,783 |
| Duchouquet | 14,112 |
| Dudley | 1,425 |
| Duncan Falls | 1,605 |
| Dundee | 174 |
| Dunham | 2,497 |
| Dunkirk | 751 |
| Dunlap | 1,003 |
| Dupont | 205 |