ZIP Code 21757
Keymar, Maryland · Frederick County
No9174
Zip21757
TypeSTANDARD
Decommissioned0
Primary CityKeymar
Acceptable CitiesDetour, Middleburg
Unacceptable Cities—
StateMD
LstateMaryland
CountyFrederick County
TimezoneAmerica/New_York
Area Codes227, 240, 301, 410, 443, 667
World RegionNA
CountryUS
Latitude39,59
Longitude-77,26