Montgomery County, Maryland ZIP codes
77ZIP codes
30Cities and towns
1,076,754People in ZIP areas
202, 227, 240Area codes
Montgomery County is in Maryland and the Eastern Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.
All ZIP codes in Montgomery County
| ZIP code | City | Type | Population | Median income |
|---|---|---|---|---|
| 20810 | Bethesda | Unique | – | – |
| 20811 | Bethesda | Unique | – | – |
| 20812 | Glen Echo | Standard | 276 | $213,750 |
| 20813 | Bethesda | PO Box only | – | – |
| 20814 | Bethesda | Standard | 32,795 | $150,996 |
| 20815 | Chevy Chase | Standard | 30,505 | $194,971 |
| 20816 | Bethesda | Standard | 18,140 | $232,656 |
| 20817 | Bethesda | Standard | 37,454 | $249,332 |
| 20818 | Cabin John | Standard | 1,539 | $245,982 |
| 20824 | Bethesda | PO Box only | – | – |
| 20825 | Chevy Chase | PO Box only | – | – |
| 20827 | Bethesda | PO Box only | – | – |
| 20830 | Olney | PO Box only | – | – |
| 20832 | Olney | Standard | 25,553 | $168,524 |
| 20833 | Brookeville | Standard | 7,860 | $204,375 |
| 20837 | Poolesville | Standard | 6,699 | $174,063 |
| 20838 | Barnesville | Standard | 306 | $250,001 |
| 20839 | Beallsville | Standard | 158 | $160,329 |
| 20841 | Boyds | Standard | 9,969 | $184,688 |
| 20842 | Dickerson | Standard | 2,369 | $204,013 |
| 20847 | Rockville | PO Box only | – | – |
| 20848 | Rockville | PO Box only | – | – |
| 20849 | Rockville | PO Box only | – | – |
| 20850 | Rockville | Standard | 50,353 | $125,950 |
| 20851 | Rockville | Standard | 14,946 | $126,411 |
| 20852 | Rockville | Standard | 48,180 | $122,472 |
| 20853 | Rockville | Standard | 31,851 | $159,080 |
| 20854 | Potomac | Standard | 50,498 | $250,001 |
| 20855 | Derwood | Standard | 17,279 | $149,110 |
| 20857 | Rockville | Unique | – | – |
| 20859 | Potomac | PO Box only | – | – |
| 20860 | Sandy Spring | Standard | 2,035 | – |
| 20861 | Ashton | Standard | 2,890 | $163,438 |
| 20862 | Brinklow | Standard | 430 | $189,667 |
| 20866 | Burtonsville | Standard | 15,986 | $140,308 |
| 20868 | Spencerville | Standard | 198 | $143,333 |
| 20871 | Clarksburg | Standard | 30,182 | $177,523 |
| 20872 | Damascus | Standard | 13,983 | $141,050 |
| 20874 | Germantown | Standard | 62,738 | $115,022 |
| 20875 | Germantown | PO Box only | – | – |
| 20876 | Germantown | Standard | 26,406 | $119,731 |
| 20877 | Gaithersburg | Standard | 38,546 | $92,800 |
| 20878 | Gaithersburg | Standard | 66,115 | $144,313 |
| 20879 | Gaithersburg | Standard | 25,264 | $112,104 |
| 20880 | Washington Grove | PO Box only | 577 | $134,583 |
| 20882 | Gaithersburg | Standard | 13,751 | $184,136 |
| 20883 | Gaithersburg | PO Box only | – | – |
| 20884 | Gaithersburg | PO Box only | – | – |
| 20885 | Gaithersburg | PO Box only | – | – |
| 20886 | Montgomery Village | Standard | 34,718 | $98,542 |
| 20889 | Bethesda | Unique | 584 | – |
| 20891 | Kensington | PO Box only | – | – |
| 20892 | Bethesda | Unique | – | – |
| 20894 | Bethesda | Unique | – | – |
| 20895 | Kensington | Standard | 19,184 | $173,625 |
| 20896 | Garrett Park | PO Box only | 932 | $250,001 |
| 20897 | Suburb Maryland Fac | Unique | – | – |
| 20898 | Gaithersburg | PO Box only | – | – |
| 20899 | Gaithersburg | Unique | 57 | $24,417 |
| 20901 | Silver Spring | Standard | 36,435 | $131,386 |
| 20902 | Silver Spring | Standard | 54,261 | $114,486 |
| 20903 | Silver Spring | Standard | 24,815 | $80,768 |
| 20904 | Silver Spring | Standard | 58,646 | $96,025 |
| 20905 | Silver Spring | Standard | 19,004 | $159,740 |
| 20906 | Silver Spring | Standard | 70,595 | $97,521 |
| 20907 | Silver Spring | PO Box only | – | – |
| 20908 | Silver Spring | PO Box only | – | – |
| 20910 | Silver Spring | Standard | 45,943 | $112,134 |
| 20911 | Silver Spring | PO Box only | – | – |
| 20912 | Takoma Park | Standard | 25,749 | $83,870 |
| 20913 | Takoma Park | PO Box only | – | – |
| 20914 | Silver Spring | PO Box only | – | – |
| 20915 | Silver Spring | PO Box only | – | – |
| 20916 | Silver Spring | PO Box only | – | – |
| 20918 | Silver Spring | PO Box only | – | – |
| 20993 | Silver Spring | Unique | – | – |
| 20997 | Silver Spring | Unique | – | – |
Cities and towns in Montgomery County
- Silver Spring 16 ZIPs
- Bethesda 11 ZIPs
- Gaithersburg 9 ZIPs
- Rockville 8 ZIPs
- Germantown 3 ZIPs
- Chevy Chase 2 ZIPs
- Kensington 2 ZIPs
- Olney 2 ZIPs
- Potomac 2 ZIPs
- Takoma Park 2 ZIPs
- Ashton 1 ZIP
- Barnesville 1 ZIP
- Beallsville 1 ZIP
- Boyds 1 ZIP
- Brinklow 1 ZIP
- Brookeville 1 ZIP
- Burtonsville 1 ZIP
- Cabin John 1 ZIP
- Clarksburg 1 ZIP
- Damascus 1 ZIP
- Derwood 1 ZIP
- Dickerson 1 ZIP
- Garrett Park 1 ZIP
- Glen Echo 1 ZIP
- Montgomery Village 1 ZIP
- Poolesville 1 ZIP
- Sandy Spring 1 ZIP
- Spencerville 1 ZIP
- Suburb Maryland Fac 1 ZIP
- Washington Grove 1 ZIP
Area codes in Montgomery County
Questions
- How many ZIP codes are in Montgomery County, MD?
- Montgomery County has 77 ZIP codes, 42 of them standard ZIP codes for street addresses.
- What cities are in Montgomery County?
- Montgomery County ZIP codes cover Silver Spring, Bethesda, Gaithersburg, Rockville, Germantown, Chevy Chase, Kensington and Olney and 22 other places.
- What area code is Montgomery County, MD?
- Montgomery County uses area codes 202, 227, 240, 301, 410, 443, 571, 667, 703 and 771.
- What time zone is Montgomery County in?
- Montgomery County is in Eastern Time.
Other Maryland counties
- Allegany County
- Anne Arundel County
- Baltimore city
- Baltimore County
- Calvert County
- Caroline County
- Carroll County
- Cecil County
- Charles County
- Dorchester County
- Frederick County
- Garrett County
- Harford County
- Howard County
- Kent County
- Prince George's County
- Queen Anne's County
- Somerset County
- St. Mary's County
- Talbot County
- Washington County
- Wicomico County
- Worcester County