ZIP Code 21704
Frederick, Maryland · Frederick County
No9142
Zip21704
TypeSTANDARD
Decommissioned0
Primary CityFrederick
Acceptable CitiesUrbana
Unacceptable Cities—
StateMD
LstateMaryland
CountyFrederick County
TimezoneAmerica/New_York
Area Codes227, 240, 301
World RegionNA
CountryUS
Latitude39,35
Longitude-77,38