Identifiers: CDP · city
| Rank | Community | Population |
|---|---|---|
| 1 | Columbia (CDP), MD | 104,681 |
| 2 | Germantown (CDP), MD | 91,249 |
| 3 | Silver Spring (CDP), MD | 81,015 |
| 4 | Gaithersburg (city), MD | 69,657 |
| 5 | Bethesda (CDP), MD | 68,056 |
| 6 | Rockville (city), MD | 67,117 |
| 7 | Bowie (city), MD | 58,329 |
| 8 | Wheaton (CDP), MD | 52,150 |
| 9 | Aspen Hill (CDP), MD | 51,063 |
| 10 | North Bethesda (CDP), MD | 50,094 |
| 11 | Potomac (CDP), MD | 47,018 |
| 12 | Chillum (CDP), MD | 36,039 |
| 13 | Olney (CDP), MD | 35,820 |
| 14 | Montgomery Village (CDP), MD | 34,893 |
| 15 | College Park (city), MD | 34,740 |
| 16 | Laurel (city), MD | 30,060 |
| 17 | South Laurel (CDP), MD | 29,602 |
| 18 | Landover (CDP), MD | 25,998 |
| 19 | Fairland (CDP), MD | 25,396 |
| 20 | North Laurel (CDP), MD | 25,379 |