| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| De La Plaine Manor | city | Maryland | United States | 39.58 | -75.95 | 95 | |
| Deakins Range | city | Maryland | United States | 39.08 | -77.30 | 291 | |
| Deal Island | city | Maryland | United States | 38.16 | -75.95 | 3 | |
| Deale | city | Maryland | United States | 38.78 | -76.56 | 0 | |
| Deale Beach | city | Maryland | United States | 38.78 | -76.54 | 3 | |
| Deans Meadows | city | Maryland | United States | 39.01 | -75.91 | 42 | |
| Deanwood Park | city | Maryland | United States | 38.91 | -76.92 | 98 | |
| Deep Branch | city | Maryland | United States | 38.31 | -75.83 | 9 | |
| Deep Harbor | city | Maryland | United States | 38.73 | -76.33 | 3 | |
| Deep Harbor Estates | city | Maryland | United States | 38.53 | -76.17 | 3 | |
| Deep Harbour | city | Maryland | United States | 38.30 | -75.58 | 49 | |
| Deep Harbour Farm Estates | city | Maryland | United States | 38.73 | -76.33 | 3 | |
| Deep Landing | city | Maryland | United States | 38.60 | -76.67 | 19 | |
| Deep Landing | city | Maryland | United States | 39.24 | -75.96 | 42 | |
| Deep Landing Estates | city | Maryland | United States | 38.59 | -76.67 | 19 | |
| Deep Run | city | Maryland | United States | 39.69 | -76.99 | 830 | |
| Deep Run Park | city | Maryland | United States | 39.19 | -76.79 | 259 | |
| Deep Run Park | city | Maryland | United States | 39.19 | -76.79 | 226 | |
| Deep Valley | city | Maryland | United States | 39.49 | -76.97 | 830 | |
| Deer Creek | city | Maryland | United States | 39.04 | -76.46 | 52 | |
| Deer Creek Estates | city | Maryland | United States | 39.60 | -76.18 | 223 | |
| Deer Cross | city | Maryland | United States | 39.43 | -76.86 | 830 | |
| Deer Crossing | city | Maryland | United States | 38.56 | -76.55 | 131 | |
| Deer Haven | city | Maryland | United States | 39.54 | -75.85 | 45 | |
| Deer Lodge Mobile Home Park | city | Maryland | United States | 39.65 | -77.83 | 830 | |
| Deer Meadows | city | Maryland | United States | 39.65 | -76.49 | 830 | |
| Deer Park | city | Maryland | United States | 39.07 | -76.95 | 298 | |
| Deer Park | city | Maryland | United States | 39.40 | -76.83 | 830 | |
| Deer Park | city | Maryland | United States | 39.42 | -79.33 | 2509 | |
| Deer Park | city | Maryland | United States | 38.47 | -76.91 | 137 | |
| Deer Park | city | Maryland | United States | 39.64 | -76.31 | 252 | |
| Deer Park Estates | city | Maryland | United States | 39.50 | -76.93 | 830 | |
| Deer Park Heights | city | Maryland | United States | 38.83 | -76.95 | 239 | |
| Deer Park Ridge | city | Maryland | United States | 39.47 | -76.90 | 830 | |
| Deer Ridge | city | Maryland | United States | 39.46 | -77.47 | 830 | |
| Deer Run | city | Maryland | United States | 39.43 | -76.66 | 410 | |
| Deer Woods | city | Maryland | United States | 39.44 | -76.53 | 200 | |
| Deercreek (historical) | city | Maryland | United States | 39.62 | -76.27 | 232 | |
| Deerfield | city | Maryland | United States | 39.02 | -77.16 | 246 | |
| Deerfield | city | Maryland | United States | 39.10 | -76.08 | 49 | |
| Deerfield | city | Maryland | United States | 38.38 | -75.55 | 32 | |
| Deerfield | city | Maryland | United States | 38.61 | -76.63 | 98 | |
| Deerfield | city | Maryland | United States | 39.66 | -76.27 | 396 | |
| Deerfield | city | Maryland | United States | 39.12 | -76.53 | 98 | |
| Deerfield | city | Maryland | United States | 39.49 | -77.33 | 308 | |
| Deerhaven | city | Maryland | United States | 39.56 | -76.26 | 357 | |
| Deerpark | city | Maryland | United States | 39.51 | -76.96 | 830 | |
| Deers Head Manor | city | Maryland | United States | 38.39 | -75.59 | 19 | |
| Deerwood | city | Maryland | United States | 38.62 | -76.96 | 196 | |
| Defense Heights | city | Maryland | United States | 39.30 | -76.51 | 49 | |
| Defense Heights | city | Maryland | United States | 38.95 | -76.90 | 91 | |
| Delancy Village | city | Maryland | United States | 39.61 | -75.79 | 68 | |
| Delano Acres | city | Maryland | United States | 39.63 | -76.37 | 259 | |
| Delight | city | Maryland | United States | 39.44 | -76.81 | 830 | |
| Delight | city | Maryland | United States | 38.65 | -76.89 | 196 | |
| Delight Meadows | city | Maryland | United States | 39.43 | -76.83 | 830 | |
| Dell Mont | city | Maryland | United States | 39.56 | -76.91 | 830 | |
| Dellabrooke Estates | city | Maryland | United States | 39.18 | -77.04 | 396 | |
| Delle Bourne | city | Maryland | United States | 38.14 | -76.40 | 22 | |
| Dellwood | city | Maryland | United States | 39.01 | -76.53 | 19 | |
| Delmar | city | Maryland | United States | 38.46 | -75.58 | 49 | |
| Delmont | city | Maryland | United States | 39.13 | -76.68 | 108 | |
| Delta Heights | city | Maryland | United States | 39.20 | -76.23 | 9 | |
| Dembeigh Hill | city | Maryland | United States | 39.38 | -76.64 | 396 | |
| Den Mar | city | Maryland | United States | 38.67 | -76.60 | 114 | |
| Denbigh (historical) | city | Maryland | United States | 39.16 | -76.24 | 3 | |
| Denby Hill | city | Maryland | United States | 38.29 | -76.78 | 49 | |
| Dendor Mar Estates | city | Maryland | United States | 39.31 | -77.14 | 830 | |
| Denit Estates | city | Maryland | United States | 39.21 | -77.03 | 406 | |
| Denmore Park | city | Maryland | United States | 39.35 | -76.67 | 400 | |
| Denneys Delight | city | Maryland | United States | 39.49 | -77.26 | 830 | |
| Dennings | city | Maryland | United States | 39.49 | -77.07 | 830 | |
| Dennis (historical) | city | Maryland | United States | 39.37 | -77.33 | 354 | |
| Denton | city | Maryland | United States | 38.88 | -75.83 | 32 | |
| Dentsville | city | Maryland | United States | 38.48 | -76.89 | 147 | |
| Der Spring Farms | city | Maryland | United States | 39.42 | -77.52 | 830 | |
| Derby Farms | city | Maryland | United States | 39.12 | -76.66 | 98 | |
| Derwood | city | Maryland | United States | 39.12 | -77.16 | 830 | |
| Detmold | city | Maryland | United States | 39.55 | -78.99 | 1669 | |
| Detour | city | Maryland | United States | 39.60 | -77.27 | 351 | |
| Devilbiss Estates | city | Maryland | United States | 39.60 | -77.42 | 830 | |
| Devon Farms | city | Maryland | United States | 39.51 | -77.37 | 298 | |
| Devonshire | city | Maryland | United States | 39.05 | -76.64 | 98 | |
| Devonshire Forest | city | Maryland | United States | 39.42 | -76.62 | 400 | |
| Dewberry Estates | city | Maryland | United States | 39.47 | -76.96 | 830 |