| Community | Population | Elevation |
|---|---|---|
| Baltimore | 636,919 | 32 ft. |
| Bel Air | 9,826 | 695 ft. |
| Betterton | 354 | 72 ft. |
| Bowie | 52,544 | 154 ft. |
| California | None | 19 ft. |
| Cambridge | 11,752 | 19 ft. |
| Chestertown | 4,899 | 19 ft. |
| Columbia | None | 406 ft. |
| Frederick | 59,213 | 285 ft. |
| Gaithersburg | 58,744 | 501 ft. |
| Galena | 504 | 68 ft. |
| Germantown | None | 265 ft. |
| Hurlock | 2,048 | 36 ft. |
| La Plata | 8,879 | 187 ft. |
| Leonardtown | 2,214 | 85 ft. |
| Lexington Park | None | 118 ft. |
| McHenry | None | None ft. |
| Millington | 445 | 19 ft. |
| Rock Hall | 1,486 | 236 ft. |
| Secretary | 487 | 19 ft. |
| Towson | None | 462 ft. |
| Vienna | 319 | 13 ft. |
| Wheaton-Glenmont | None | None ft. |