Montgomery County, Maryland ZIP codes
76 ZIP codes are in Montgomery County, plus 5 that cross in from neighboring counties. It's part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metro area.
- ZIP codes
- 76
- Population in these ZIPs
- 1,076,754
- Avg. median income
- $140,300population-weighted
- Cities & towns
- 30
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Montgomery County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 20810 PO Box | Bethesda | — | — | — |
| 20811 PO Box | Bethesda | — | — | — |
| 20812 | Glen Echo | 276 | $213,750 | $1,284,300 |
| 20813 PO Box | Bethesda | — | — | — |
| 20814 | Bethesda | 32,795 | $150,996 | $762,100 |
| 20815 | Chevy Chase | 30,505 | $194,971 | $1,150,200 |
| 20816 | Bethesda | 18,140 | $232,656 | $1,277,800 |
| 20817 | Bethesda | 37,454 | $249,332 | $1,281,400 |
| 20818 | Cabin John | 1,539 | $245,982 | $1,240,000 |
| 20824 PO Box | Bethesda | — | — | — |
| 20825 PO Box | Chevy Chase | — | — | — |
| 20827 PO Box | Bethesda | — | — | — |
| 20830 PO Box | Olney | — | — | — |
| 20832 | Olney | 25,553 | $168,524 | $650,600 |
| 20833 | Brookeville | 7,860 | $204,375 | $801,800 |
| 20837 | Poolesville | 6,699 | $174,063 | $718,700 |
| 20838 | Barnesville | 306 | $250,001 | $704,600 |
| 20839 | Beallsville | 158 | $160,329 | $653,400 |
| 20841 | Boyds | 9,969 | $184,688 | $822,900 |
| 20842 | Dickerson | 2,369 | $204,013 | $730,500 |
| 20847 PO Box | Rockville | — | — | — |
| 20848 PO Box | Rockville | — | — | — |
| 20849 PO Box | Rockville | — | — | — |
| 20850 | Rockville | 50,353 | $125,950 | $671,000 |
| 20851 | Rockville | 14,946 | $126,411 | $530,100 |
| 20852 | Rockville | 48,180 | $122,472 | $529,400 |
| 20853 | Rockville | 31,851 | $159,080 | $623,800 |
| 20854 | Potomac | 50,498 | $250,001 | $1,263,000 |
| 20855 | Derwood | 17,279 | $149,110 | $673,700 |
| 20857 PO Box | Rockville | — | — | — |
| 20859 PO Box | Potomac | — | — | — |
| 20860 | Sandy Spring | 2,035 | — | $804,800 |
| 20861 | Ashton | 2,890 | $163,438 | $946,600 |
| 20862 | Brinklow | 430 | $189,667 | $900,500 |
| 20866 | Burtonsville | 15,986 | $140,308 | $454,200 |
| 20868 | Spencerville | 198 | $143,333 | $747,600 |
| 20871 | Clarksburg | 30,182 | $177,523 | $624,100 |
| 20872 | Damascus | 13,983 | $141,050 | $541,000 |
| 20874 | Germantown | 62,738 | $115,022 | $408,800 |
| 20875 PO Box | Germantown | — | — | — |
| 20876 | Germantown | 26,406 | $119,731 | $473,500 |
| 20877 | Gaithersburg | 38,546 | $92,800 | $467,800 |
| 20878 | Gaithersburg | 66,115 | $144,313 | $680,700 |
| 20879 | Gaithersburg | 25,264 | $112,104 | $433,100 |
| 20880 | Washington Grove | 577 | $134,583 | $610,900 |
| 20882 | Gaithersburg | 13,751 | $184,136 | $785,800 |
| 20883 PO Box | Gaithersburg | — | — | — |
| 20884 PO Box | Gaithersburg | — | — | — |
| 20885 PO Box | Gaithersburg | — | — | — |
| 20886 | Montgomery Village | 34,718 | $98,542 | $381,100 |
| 20889 | Bethesda | 584 | — | — |
| 20891 PO Box | Kensington | — | — | — |
| 20892 | Bethesda | 0 | — | — |
| 20894 | Bethesda | 0 | — | — |
| 20895 | Kensington | 19,184 | $173,625 | $790,300 |
| 20896 | Garrett Park | 932 | $250,001 | $1,042,700 |
| 20897 PO Box | Suburb Maryland Fac | — | — | — |
| 20898 PO Box | Gaithersburg | — | — | — |
| 20899 | Gaithersburg | 57 | $24,417 | — |
| 20901 | Silver Spring | 36,435 | $131,386 | $582,000 |
| 20902 | Silver Spring | 54,261 | $114,486 | $529,300 |
| 20903 | Silver Spring | 24,815 | $80,768 | $507,500 |
| 20904 | Silver Spring | 58,646 | $96,025 | $576,000 |
| 20905 | Silver Spring | 19,004 | $159,740 | $665,500 |
| 20906 | Silver Spring | 70,595 | $97,521 | $436,800 |
| 20907 PO Box | Silver Spring | — | — | — |
| 20908 PO Box | Silver Spring | — | — | — |
| 20910 | Silver Spring | 45,943 | $112,134 | $633,300 |
| 20911 PO Box | Silver Spring | — | — | — |
| 20912 | Takoma Park | 25,749 | $83,870 | $672,300 |
| 20914 PO Box | Silver Spring | — | — | — |
| 20915 PO Box | Silver Spring | — | — | — |
| 20916 PO Box | Silver Spring | — | — | — |
| 20918 PO Box | Silver Spring | — | — | — |
| 20993 PO Box | Silver Spring | — | — | — |
| 20997 PO Box | Silver Spring | — | — | — |
ZIP codes partly in Montgomery County
These ZIP codes are mostly in a neighboring county but cover part of Montgomery County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 20705 | Beltsville | Prince George's County | 28,713 | $110,351 | $450,000 |
| 20707 | Laurel | Prince George's County | 37,278 | $107,706 | $404,200 |
| 20777 | Highland | Howard County | 3,221 | $226,146 | $984,700 |
| 21771 | Mount Airy | Frederick County | 33,031 | $157,302 | $625,900 |
| 21797 | Woodbine | Howard County | 8,643 | $189,241 | $800,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Montgomery County
- Bethesda
- Glen Echo
- Chevy Chase
- Cabin John
- Olney
- Brookeville
- Poolesville
- Barnesville
- Beallsville
- Boyds
- Dickerson
- Rockville
- Potomac
- Derwood
- Sandy Spring
- Ashton
- Brinklow
- Burtonsville
- Spencerville
- Clarksburg
- Damascus
- Germantown
- Gaithersburg
- Washington Grove
- Montgomery Village
- Kensington
- Garrett Park
- Suburb Maryland Fac
- Silver Spring
- Takoma Park
Nearby counties
Frequently asked questions
How many ZIP codes are in Montgomery County, Maryland?
76 ZIP codes are mainly in Montgomery County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Montgomery County?
ZIP codes in Montgomery County use the city names Ashton, Barnesville, Beallsville, Bethesda, Boyds, Brinklow, Brookeville, Burtonsville, Cabin John, Chevy Chase, Clarksburg and Damascus and others.
What metro area is Montgomery County in?
Montgomery County is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan statistical area.