ZIP Code 20857
Rockville, Maryland · Montgomery County
No8821
Zip20857
TypeUNIQUE
Decommissioned0
Primary CityRockville
Acceptable Cities—
Unacceptable CitiesHhs
StateMD
LstateMaryland
CountyMontgomery County
TimezoneAmerica/New_York
Area Codes240
World RegionNA
CountryUS
Latitude39,08
Longitude-77,15