Montgomery County, Maryland Zip Codes
| Silver Spring | 71,560 |
| Gaithersburg | 65,954 |
| Germantown | 61,922 |
| Silver Spring | 56,532 |
| Silver Spring | 53,308 |
| Rockville | 51,072 |
| Potomac | 49,320 |
| Rockville | 48,379 |
| Silver Spring | 45,072 |
| Gaithersburg | 38,524 |
| Bethesda | 37,795 |
| Silver Spring | 37,207 |
| Montgomery Village | 34,692 |
| Rockville | 31,794 |
| Chevy Chase | 31,080 |
| Bethesda | 30,234 |
| Gaithersburg | 27,489 |
| Clarksburg | 27,420 |
| Germantown | 26,572 |
| Takoma Park | 25,823 |
| Olney | 25,488 |
| Silver Spring | 25,324 |
| Kensington | 19,273 |
| Silver Spring | 17,451 |
| Bethesda | 17,390 |
| Burtonsville | 16,680 |
| Derwood | 16,558 |
| Rockville | 14,659 |
| Gaithersburg | 13,962 |
| Damascus | 12,932 |
| Boyds | 9,312 |
| Brookeville | 7,949 |
| Poolesville | 6,651 |
| Ashton | 3,031 |
| Sandy Spring | 2,279 |
| Dickerson | 1,927 |
| Cabin John | 1,787 |
| Garrett Park | 840 |
| Spencerville | 630 |
| Washington Grove | 604 |
| Barnesville | 368 |
| Glen Echo | 282 |
| Brinklow | 268 |
| Beallsville | 161 |
| Bethesda | 158 |
| Gaithersburg | 143 |
| Bethesda | 0 |
| Bethesda | 0 |
- Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.