ZIP Code 21057
Glen Arm, Maryland · Baltimore County
No8907
Zip21057
TypeSTANDARD
Decommissioned0
Primary CityGlen Arm
Acceptable Cities—
Unacceptable Cities—
StateMD
LstateMaryland
CountyBaltimore County
TimezoneAmerica/New_York
Area Codes410, 443, 667
World RegionNA
CountryUS
Latitude39,44
Longitude-76,5