There are 48 zip codes in Montgomery County, Maryland. The most populated is 20906, located in Silver Spring. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
2090671,560Silver Spring
2087865,954Gaithersburg
2087461,922Germantown
2090456,532Silver Spring
2090253,308Silver Spring
2085051,072Rockville
2085449,320Potomac
2085248,379Rockville
2091045,072Silver Spring
2087738,524Gaithersburg
2081737,795Bethesda
2090137,207Silver Spring
2088634,692Montgomery Village
2085331,794Rockville
2081531,080Chevy Chase
2081430,234Bethesda
2087927,489Gaithersburg
2087127,420Clarksburg
2087626,572Germantown
2091225,823Takoma Park
2083225,488Olney
2090325,324Silver Spring
2089519,273Kensington
2090517,451Silver Spring
2081617,390Bethesda
2086616,680Burtonsville
2085516,558Derwood
2085114,659Rockville
2088213,962Gaithersburg
2087212,932Damascus
208419,312Boyds
208337,949Brookeville
208376,651Poolesville
208613,031Ashton
208602,279Sandy Spring
208421,927Dickerson
208181,787Cabin John
20896840Garrett Park
20868630Spencerville
20880604Washington Grove
20838368Barnesville
20812282Glen Echo
20862268Brinklow
20839161Beallsville
20889158Bethesda
20899143Gaithersburg
20892Bethesda
20894Bethesda
showing: 48 rows

Zip Codes in Montgomery County, Maryland by Population (2024)