ZIP Code 21738
Glenwood, Maryland · Howard County
No9162
Zip21738
TypeSTANDARD
Decommissioned0
Primary CityGlenwood
Acceptable Cities—
Unacceptable Cities—
StateMD
LstateMaryland
CountyHoward County
TimezoneAmerica/New_York
Area Codes410, 443, 667
World RegionNA
CountryUS
Latitude39,28
Longitude-77,02