| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Manor Park | city | District of Columbia | United States | 38.96 | -77.02 | 242 | |
| Marshall Heights | city | District of Columbia | United States | 38.89 | -76.93 | 183 | |
| Massachusetts Avenue Heights | city | District of Columbia | United States | 38.93 | -77.06 | 190 | |
| Mayfair-Parkside | city | District of Columbia | United States | 38.90 | -76.95 | 144 | |
| McLean Gardens | city | District of Columbia | United States | 38.94 | -77.08 | 328 | |
| Metropolis View | city | District of Columbia | United States | 38.93 | -77.00 | 114 | |
| Michigan Park | city | District of Columbia | United States | 38.95 | -76.99 | 91 | |
| Monastery Lot (historical) | city | District of Columbia | United States | 38.92 | -76.97 | 68 | |
| Morris Addition (historical) | city | District of Columbia | United States | 38.91 | -76.97 | 39 | |
| Mount Pleasant | city | District of Columbia | United States | 38.93 | -77.04 | 190 | |
| Mount Vernon Square | city | District of Columbia | United States | 38.90 | -77.02 | 49 |