| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Thabar | city | Maryland | United States | 39.72 | -75.79 | 252 | |
| Thanksgiving | city | Maryland | United States | 38.76 | -76.16 | 3 | |
| Thayerville | city | Maryland | United States | 39.50 | -79.33 | 2634 | |
| The Alameda | city | Maryland | United States | 38.60 | -76.63 | 98 | |
| The Bachelor Point Harbor | city | Maryland | United States | 38.67 | -76.17 | 0 | |
| The Beechs | city | Maryland | United States | 39.42 | -76.56 | 311 | |
| The Birches | city | Maryland | United States | 39.23 | -76.86 | 390 | |
| The Bluffs | city | Maryland | United States | 39.65 | -76.15 | 246 | |
| The Cedars | city | Maryland | United States | 39.48 | -76.30 | 147 | |
| The Chase | city | Maryland | United States | 39.24 | -76.92 | 351 | |
| The Chase at Foxridge | city | Maryland | United States | 39.39 | -76.79 | 830 | |
| The Cloisters at Charles | city | Maryland | United States | 39.38 | -76.62 | 830 | |
| The Colony | city | Maryland | United States | 39.41 | -76.62 | 830 | |
| The Colony | city | Maryland | United States | 39.18 | -77.26 | 406 | |
| The Corners | city | Maryland | United States | 39.26 | -76.98 | 830 | |
| The Courts at Piney Orchard | city | Maryland | United States | 39.07 | -76.71 | 196 | |
| The Courts of Four Seasons | city | Maryland | United States | 39.06 | -76.70 | 200 | |
| The Courtyards | city | Maryland | United States | 38.98 | -76.55 | 49 | |
| The Dales | city | Maryland | United States | 39.11 | -76.56 | 98 | |
| The Downs | city | Maryland | United States | 39.02 | -76.55 | 98 | |
| The Elms at Germantown | city | Maryland | United States | 39.19 | -77.24 | 830 | |
| The Estates of Wyn Lea | city | Maryland | United States | 39.70 | -75.91 | 387 | |
| The Fairways | city | Maryland | United States | 39.28 | -76.87 | 400 | |
| The Fairways at Wakefield | city | Maryland | United States | 39.57 | -77.04 | 830 | |
| The Falls | city | Maryland | United States | 39.38 | -76.67 | 400 | |
| The Fields of Four Corners | city | Maryland | United States | 39.52 | -76.55 | 830 | |
| The Greens | city | Maryland | United States | 39.38 | -77.31 | 830 | |
| The Greens of Crofton | city | Maryland | United States | 38.99 | -76.68 | 147 | |
| The Grove | city | Maryland | United States | 39.19 | -76.00 | 49 | |
| The Hamlet | city | Maryland | United States | 38.99 | -77.07 | 347 | |
| The Hemlocks | city | Maryland | United States | 39.40 | -76.93 | 830 | |
| The Heritage | city | Maryland | United States | 39.26 | -77.01 | 830 | |
| The Hermitage | city | Maryland | United States | 39.53 | -77.04 | 830 | |
| The Highlands | city | Maryland | United States | 39.69 | -75.79 | 150 | |
| The Highlands | city | Maryland | United States | 38.70 | -76.55 | 98 | |
| The Highlands | city | Maryland | United States | 39.13 | -76.61 | 72 | |
| The Highlands of Hunt Valley | city | Maryland | United States | 39.52 | -76.60 | 370 | |
| The Hill Farm | city | Maryland | United States | 39.44 | -76.68 | 830 | |
| The Hills | city | Maryland | United States | 38.75 | -76.58 | 49 | |
| The Knolls | city | Maryland | United States | 38.54 | -76.60 | 144 | |
| The Lakes | city | Maryland | United States | 39.47 | -76.61 | 830 | |
| The Manors | city | Maryland | United States | 39.46 | -76.79 | 830 | |
| The Meadows | city | Maryland | United States | 39.41 | -76.81 | 830 | |
| The Meadows | city | Maryland | United States | 39.40 | -76.46 | 150 | |
| The Meadows | city | Maryland | United States | 39.15 | -75.98 | 45 | |
| The Meadows | city | Maryland | United States | 38.67 | -76.66 | 95 | |
| The Meadows | city | Maryland | United States | 38.54 | -76.97 | 147 | |
| The Meadows | city | Maryland | United States | 39.59 | -77.10 | 830 | |
| The Meadows | city | Maryland | United States | 39.01 | -76.48 | 49 | |
| The Meadows at Elk Creek | city | Maryland | United States | 39.63 | -75.80 | 98 | |
| The Oaks | city | Maryland | United States | 38.60 | -76.65 | 98 | |
| The Oaks | city | Maryland | United States | 39.29 | -76.80 | 200 | |
| The Oaks at Five Farms | city | Maryland | United States | 39.44 | -76.65 | 830 | |
| The Orchards | city | Maryland | United States | 39.30 | -76.83 | 830 | |
| The Peach Orchard | city | Maryland | United States | 39.14 | -76.72 | 154 | |
| The Pines | city | Maryland | United States | 39.33 | -76.08 | 42 | |
| The Pines | city | Maryland | United States | 39.16 | -76.87 | 249 | |
| The Pines at Deep Run | city | Maryland | United States | 39.47 | -76.70 | 830 | |
| The Plains | city | Maryland | United States | 39.00 | -75.89 | 55 | |
| The Plains | city | Maryland | United States | 38.45 | -76.86 | 147 | |
| The Plantations | city | Maryland | United States | 39.25 | -77.20 | 830 | |
| The Pointe | city | Maryland | United States | 39.47 | -76.32 | 111 | |
| The Pond | city | Maryland | United States | 39.56 | -76.38 | 830 | |
| The Ponderosa | city | Maryland | United States | 39.29 | -77.28 | 830 | |
| The Provinces | city | Maryland | United States | 39.13 | -76.72 | 150 | |
| The Ridges | city | Maryland | United States | 38.99 | -76.60 | 98 | |
| The Ridings | city | Maryland | United States | 38.95 | -76.53 | 3 | |
| The Rock (historical) | city | Maryland | United States | 39.70 | -75.89 | 298 | |
| The Sands | city | Maryland | United States | 38.87 | -76.67 | 72 | |
| The Sounding | city | Maryland | United States | 38.35 | -76.43 | 42 | |
| The Terraces | city | Maryland | United States | 39.37 | -76.66 | 288 | |
| The Timbers | city | Maryland | United States | 39.43 | -76.27 | 3 | |
| The Timbers | city | Maryland | United States | 39.04 | -76.51 | 98 | |
| The Village | city | Maryland | United States | 39.39 | -76.73 | 830 | |
| The Village | city | Maryland | United States | 39.00 | -76.52 | 65 | |
| The Village | city | Maryland | United States | 38.70 | -76.83 | 196 | |
| The Village at Church Hill Crossing | city | Maryland | United States | 39.14 | -75.99 | 49 | |
| The Willows | city | Maryland | United States | 39.25 | -76.85 | 347 | |
| The Willows of Potomac | city | Maryland | United States | 39.09 | -77.21 | 830 | |
| The Willows of Ruxton | city | Maryland | United States | 39.41 | -76.63 | 403 | |
| The Woods | city | Maryland | United States | 39.01 | -76.56 | 95 | |
| The Woods of Marlton | city | Maryland | United States | 38.76 | -76.78 | 154 | |
| The Woods of Town Point | city | Maryland | United States | 39.49 | -75.92 | 0 | |
| Theodore | city | Maryland | United States | 39.64 | -76.01 | 400 | |
| Third Haven Heights | city | Maryland | United States | 38.78 | -76.09 | 3 | |
| Thistle | city | Maryland | United States | 39.25 | -76.77 | 190 | |
| Thomas | city | Maryland | United States | 38.57 | -76.28 | 3 | |
| Thomas Manor | city | Maryland | United States | 38.47 | -76.90 | 147 | |
| Thomas Run | city | Maryland | United States | 39.59 | -76.28 | 200 | |
| Thomas Town | city | Maryland | United States | 38.92 | -75.93 | 49 | |
| Thompson | city | Maryland | United States | 38.54 | -76.03 | 3 | |
| Thompson Corner | city | Maryland | United States | 38.45 | -76.79 | 147 | |
| Thompson Estates | city | Maryland | United States | 39.60 | -76.75 | 830 | |
| Thompson Estates | city | Maryland | United States | 39.45 | -77.28 | 830 | |
| Thompsons Corner | city | Maryland | United States | 39.24 | -77.33 | 830 | |
| Thompsons Purchase | city | Maryland | United States | 39.20 | -76.79 | 275 | |
| Thompsontown | city | Maryland | United States | 38.57 | -75.90 | 22 | |
| Thomson Estates | city | Maryland | United States | 39.61 | -75.80 | 85 | |
| Thornbrook | city | Maryland | United States | 39.30 | -76.84 | 830 | |
| Thornbrook | city | Maryland | United States | 39.66 | -77.36 | 830 | |
| Thornleigh | city | Maryland | United States | 39.42 | -76.65 | 295 | |
| Three Brothers | city | Maryland | United States | 38.57 | -76.80 | 196 | |
| Threemile Oak Corner | city | Maryland | United States | 38.99 | -76.55 | 49 | |
| Thrift | city | Maryland | United States | 38.72 | -76.93 | 49 | |
| Thunder Hill | city | Maryland | United States | 39.23 | -76.83 | 396 | |
| Thurmont | city | Maryland | United States | 39.62 | -77.41 | 830 | |
| Thurmont Overlook | city | Maryland | United States | 39.61 | -77.43 | 830 | |
| Thurmont West | city | Maryland | United States | 39.63 | -77.42 | 830 | |
| Thurston | city | Maryland | United States | 39.28 | -77.36 | 374 |