| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Thacher | city | Ohio | United States | 39.56 | -82.88 | 830 | |
| Thackery | city | Ohio | United States | 40.06 | -83.92 | 1099 | |
| The Angle | city | Ohio | United States | 41.49 | -81.70 | 830 | |
| The Bend | city | Ohio | United States | 41.28 | -84.52 | 830 | |
| The City of The Village of Indian Hill | city | Ohio | United States | 39.18 | -84.35 | 830 | |
| The Crossing At Grants Run | city | Ohio | United States | 39.83 | -83.05 | 830 | |
| The Eastern | city | Ohio | United States | 40.50 | -80.90 | 1010 | |
| The Estates | city | Ohio | United States | 41.45 | -81.94 | 830 | |
| The Estates of Fort Meigs | city | Ohio | United States | 41.55 | -83.65 | 830 | |
| The Glens | city | Ohio | United States | 41.47 | -81.96 | 830 | |
| The Greens At Clarenton | city | Ohio | United States | 40.05 | -82.82 | 1003 | |
| The Groves At Newmans Crossing | city | Ohio | United States | 40.50 | -83.09 | 898 | |
| The Hamlet | city | Ohio | United States | 41.58 | -83.60 | 830 | |
| The Highlands | city | Ohio | United States | 39.21 | -84.27 | 830 | |
| The Highlands At Green | city | Ohio | United States | 40.95 | -81.47 | 1197 | |
| The Knolls | city | Ohio | United States | 40.01 | -83.74 | 1099 | |
| The Knolls | city | Ohio | United States | 40.86 | -81.39 | 1105 | |
| The Maples | city | Ohio | United States | 40.50 | -84.50 | 875 | |
| The Meadows | city | Ohio | United States | 38.82 | -82.28 | 830 | |
| The Meadows | city | Ohio | United States | 41.60 | -83.44 | 830 | |
| The Meadows | city | Ohio | United States | 40.82 | -81.95 | 1089 | |
| The Meadows | city | Ohio | United States | 39.99 | -83.16 | 928 | |
| The Pines | city | Ohio | United States | 39.11 | -84.63 | 869 | |
| The Plains | city | Ohio | United States | 39.37 | -82.13 | 830 | |
| The Point | city | Ohio | United States | 39.23 | -83.35 | 830 | |
| The Ravine | city | Ohio | United States | 40.28 | -83.07 | 892 | |
| The Shores | city | Ohio | United States | 40.19 | -82.98 | 902 | |
| The Suburbans Mobile Home Park | city | Ohio | United States | 40.07 | -83.24 | 905 | |
| The Village | city | Ohio | United States | 41.39 | -83.66 | 830 | |
| The Village At Thornapple | city | Ohio | United States | 39.97 | -83.17 | 898 | |
| The Village of Indian Hill | city | Ohio | United States | 39.25 | -84.30 | 830 | |
| The Villages At Winchester | city | Ohio | United States | 39.84 | -82.83 | 830 | |
| The Willows | city | Ohio | United States | 41.04 | -81.42 | 1138 | |
| The Woods | city | Ohio | United States | 39.31 | -84.36 | 892 | |
| The Woods At Bale Kenyon | city | Ohio | United States | 40.16 | -82.96 | 898 | |
| The Woods At Cross Creek | city | Ohio | United States | 40.17 | -82.99 | 908 | |
| The Woods At Dornoch Estates | city | Ohio | United States | 40.25 | -83.05 | 898 | |
| The Woods At Havens Run | city | Ohio | United States | 40.03 | -82.82 | 987 | |
| Theil's Mobile Home Park | city | Ohio | United States | 41.94 | -80.53 | 830 | |
| Thelma | city | Ohio | United States | 41.65 | -84.23 | 830 | |
| Thivener | city | Ohio | United States | 38.74 | -82.25 | 898 | |
| Thomas Northview Trailer Court | city | Ohio | United States | 41.07 | -83.65 | 830 | |
| Thomas Trailer Park | city | Ohio | United States | 39.84 | -84.01 | 830 | |
| Thomas Village | city | Ohio | United States | 39.03 | -82.06 | 830 | |
| Thomastown | city | Ohio | United States | 41.04 | -81.49 | 1049 | |
| Thompson | city | Ohio | United States | 41.69 | -81.05 | 1669 | |
| Thomsontown (historical) | city | Ohio | United States | 41.21 | -82.88 | 830 | |
| Thorn Hill | city | Ohio | United States | 41.12 | -80.62 | 1049 | |
| Thornapple Grove | city | Ohio | United States | 39.97 | -83.17 | 898 | |
| Thornapple Highlands | city | Ohio | United States | 39.96 | -83.16 | 898 | |
| Thornhill | city | Ohio | United States | 40.48 | -81.19 | 997 | |
| Thornport | city | Ohio | United States | 39.91 | -82.41 | 898 | |
| Thornton (historical) | city | Ohio | United States | 39.39 | -83.32 | 990 | |
| Thornville | city | Ohio | United States | 39.90 | -82.42 | 997 | |
| Thorps | city | Ohio | United States | 39.88 | -83.71 | 1082 | |
| Three Forks | city | Ohio | United States | 39.69 | -81.53 | 997 | |
| Three Legs Town (historical) | city | Ohio | United States | 40.43 | -81.37 | 895 | |
| Three Locks | city | Ohio | United States | 39.25 | -82.91 | 830 | |
| Three Oaks | city | Ohio | United States | 38.50 | -82.64 | 830 | |
| Thrifton | city | Ohio | United States | 39.34 | -83.37 | 895 | |
| Thunderbird Terrace | city | Ohio | United States | 40.78 | -81.31 | 1099 | |
| Thurman | city | Ohio | United States | 38.90 | -82.45 | 830 | |
| Thurston | city | Ohio | United States | 39.84 | -82.55 | 898 |