ZIP Code 21010
Gunpowder, Maryland · Harford County
No8872
Zip21010
TypeSTANDARD
Decommissioned0
Primary CityGunpowder
Acceptable CitiesAber Prov Grd, Aberdeen Proving Ground
Unacceptable CitiesEdgewood Arsenal
StateMD
LstateMaryland
CountyHarford County
TimezoneAmerica/New_York
Area Codes410, 443, 667
World RegionNA
CountryUS
Latitude39,39
Longitude-76,29