| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| De Graff | city | Ohio | United States | 40.31 | -83.92 | 997 | |
| DeCliff | city | Ohio | United States | 40.61 | -83.34 | 898 | |
| DeForest | city | Ohio | United States | 41.20 | -80.78 | 928 | |
| DeForest Junction | city | Ohio | United States | 41.21 | -80.79 | 931 | |
| Deacon Creek Corner | city | Ohio | United States | 41.39 | -80.83 | 905 | |
| Deadman Crossing | city | Ohio | United States | 39.27 | -82.93 | 830 | |
| Deadmans (historical) | city | Ohio | United States | 40.02 | -81.98 | 935 | |
| Dean (historical) | city | Ohio | United States | 38.67 | -82.65 | 830 | |
| Deandale | city | Ohio | United States | 40.31 | -80.62 | 830 | |
| Deardoffs Mills (historical) | city | Ohio | United States | 40.64 | -81.56 | 997 | |
| Deavertown | city | Ohio | United States | 39.73 | -82.04 | 889 | |
| Decatur | city | Ohio | United States | 38.82 | -83.70 | 898 | |
| Decaturville | city | Ohio | United States | 39.33 | -81.75 | 830 | |
| Decker | city | Ohio | United States | 39.76 | -81.19 | 1200 | |
| Decrow Corners | city | Ohio | United States | 40.19 | -82.60 | 1171 | |
| Deems (historical) | city | Ohio | United States | 39.95 | -83.12 | 853 | |
| Deer Creek | city | Ohio | United States | 40.85 | -81.95 | 1095 | |
| Deer Creek Village (historical) | city | Ohio | United States | 39.97 | -83.48 | 1059 | |
| Deer Lake Mobile Park | city | Ohio | United States | 41.47 | -81.19 | 1141 | |
| Deer Lick (historical) | city | Ohio | United States | 41.62 | -84.57 | 862 | |
| Deer Meadow Mobile Home Park | city | Ohio | United States | 40.93 | -80.61 | 1197 | |
| Deer Park | city | Ohio | United States | 39.21 | -84.39 | 872 | |
| Deer Pines Estates | city | Ohio | United States | 40.91 | -81.49 | 1095 | |
| Deer Ridge Mobile Home Park | city | Ohio | United States | 41.06 | -83.63 | 830 | |
| Deer Valley Estates | city | Ohio | United States | 40.91 | -81.53 | 1003 | |
| Deerfield | city | Ohio | United States | 41.02 | -81.05 | 1049 | |
| Deering | city | Ohio | United States | 38.50 | -82.58 | 830 | |
| Deerpark Village | city | Ohio | United States | 39.78 | -84.25 | 859 | |
| Deersville | city | Ohio | United States | 40.31 | -81.19 | 1095 | |
| Defiance | city | Ohio | United States | 41.28 | -84.36 | 830 | |
| Deitonas | city | Ohio | United States | 39.76 | -84.19 | 830 | |
| Dekalb | city | Ohio | United States | 40.89 | -82.77 | 1089 | |
| Delano | city | Ohio | United States | 39.41 | -82.96 | 830 | |
| Delaveras | city | Ohio | United States | 40.30 | -83.07 | 892 | |
| Delaware | city | Ohio | United States | 40.30 | -83.07 | 892 | |
| Delaware Meadows | city | Ohio | United States | 40.30 | -83.09 | 961 | |
| Delaware Mobile Home Park | city | Ohio | United States | 40.34 | -83.05 | 898 | |
| Delhi | city | Ohio | United States | 39.10 | -84.61 | 898 | |
| Delhi Hills | city | Ohio | United States | 39.09 | -84.61 | 892 | |
| Delightful | city | Ohio | United States | 41.29 | -80.93 | 928 | |
| Delisle | city | Ohio | United States | 40.02 | -84.57 | 1046 | |
| Dell | city | Ohio | United States | 39.41 | -81.36 | 830 | |
| Dellroy | city | Ohio | United States | 40.55 | -81.20 | 997 | |
| Delmont | city | Ohio | United States | 39.68 | -82.68 | 1135 | |
| Delphi | city | Ohio | United States | 41.03 | -82.61 | 1013 | |
| Delphos | city | Ohio | United States | 40.84 | -84.34 | 830 | |
| Dels Trailer Park | city | Ohio | United States | 39.59 | -82.93 | 830 | |
| Delta | city | Ohio | United States | 41.57 | -84.01 | 830 | |
| Delta Heights | city | Ohio | United States | 41.58 | -84.01 | 830 | |
| Deluxe Mobile Home Park | city | Ohio | United States | 41.60 | -83.49 | 830 | |
| Deluxe Mobile Home Park | city | Ohio | United States | 40.80 | -81.38 | 1089 | |
| Delvin (historical) | city | Ohio | United States | 40.33 | -84.53 | 974 | |
| Denim Shack Mobile Home Park | city | Ohio | United States | 39.27 | -81.60 | 830 | |
| Denmark | city | Ohio | United States | 40.59 | -82.92 | 1010 | |
| Denmark (historical) | city | Ohio | United States | 41.49 | -84.73 | 843 | |
| Denmark Center | city | Ohio | United States | 41.75 | -80.67 | 964 | |
| Dennis | city | Ohio | United States | 38.71 | -83.08 | 830 | |
| Dennison | city | Ohio | United States | 40.39 | -81.33 | 898 | |
| Denson | city | Ohio | United States | 41.71 | -84.15 | 830 | |
| Dent | city | Ohio | United States | 39.19 | -84.65 | 830 | |
| Denver | city | Ohio | United States | 41.18 | -83.71 | 830 | |
| Denver | city | Ohio | United States | 39.19 | -83.06 | 830 | |
| Depew | city | Ohio | United States | 40.23 | -84.12 | 1046 | |
| Derby | city | Ohio | United States | 39.77 | -83.21 | 898 | |
| Derby Downs | city | Ohio | United States | 41.03 | -81.46 | 1049 | |
| Derthick | city | Ohio | United States | 39.49 | -82.12 | 859 | |
| Derwent | city | Ohio | United States | 39.92 | -81.54 | 830 | |
| Deshler | city | Ohio | United States | 41.21 | -83.90 | 830 | |
| Deucher | city | Ohio | United States | 39.47 | -81.20 | 997 | |
| Deunquat | city | Ohio | United States | 40.93 | -83.13 | 898 | |
| Devil Town | city | Ohio | United States | 40.85 | -81.97 | 997 | |
| Devola | city | Ohio | United States | 39.47 | -81.48 | 830 | |
| Devonshire | city | Ohio | United States | 41.44 | -81.95 | 830 | |
| Dewey (historical) | city | Ohio | United States | 41.47 | -80.59 | 1026 | |
| Deweyville | city | Ohio | United States | 41.13 | -83.82 | 830 | |
| Dexter | city | Ohio | United States | 39.09 | -82.21 | 830 | |
| Dexter City | city | Ohio | United States | 39.66 | -81.47 | 830 | |
| Deyarmonville | city | Ohio | United States | 40.21 | -80.76 | 830 |