Montgomery County, Maryland
48 ZIP codes · 493.14 sq mi of land · FIPS 24031
| Population | 1,065,949 |
|---|---|
| State | Maryland |
| FIPS code | 24031 |
| Time zone | Eastern |
| Land area | 493.14 sq mi |
| Center (lat, long) | 39.1374, -77.2031 |
Area codes in this area
These are the area codes that most often serve Montgomery County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Germantown · 90,719Silver Spring · 81,462Gaithersburg · 69,825Bethesda · 69,397Rockville · 67,671Potomac · 45,902Olney · 35,797Montgomery Village · 34,110Clarksburg · 30,487Damascus · 17,640Takoma Park · 17,632Glen EchoChevy ChaseCabin JohnBrookevillePoolesvilleBarnesvilleBeallsvilleBoydsDickersonDerwoodSandy SpringAshtonBrinklowBurtonsvilleSpencervilleWashington GroveKensingtonGarrett Park
ZIP codes in Montgomery County
20812 Glen Echo20814 Bethesda20815 Chevy Chase20816 Bethesda20817 Bethesda20818 Cabin John20832 Olney20833 Brookeville20837 Poolesville20838 Barnesville20839 Beallsville20841 Boyds20842 Dickerson20850 Rockville20851 Rockville20852 Rockville20853 Rockville20854 Potomac20855 Derwood20860 Sandy Spring20861 Ashton20862 Brinklow20866 Burtonsville20868 Spencerville20871 Clarksburg20872 Damascus20874 Germantown20876 Germantown20877 Gaithersburg20878 Gaithersburg20879 Gaithersburg20880 Washington Grove20882 Gaithersburg20886 Montgomery Village20889 Bethesda20892 Bethesda20894 Bethesda20895 Kensington20896 Garrett Park20899 Gaithersburg20901 Silver Spring20902 Silver Spring20903 Silver Spring20904 Silver Spring20905 Silver Spring20906 Silver Spring20910 Silver Spring20912 Takoma Park
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.