ZIP Code 20854
Potomac, Maryland · Montgomery County
No8819
Zip20854
TypeSTANDARD
Decommissioned0
Primary CityPotomac
Acceptable CitiesRockville
Unacceptable Cities—
StateMD
LstateMaryland
CountyMontgomery County
TimezoneAmerica/New_York
Area Codes227, 240, 301, 571, 703
World RegionNA
CountryUS
Latitude39,02
Longitude-77,19