ZIP Code 20634
Great Mills, Maryland · St. Mary's County
No8674
Zip20634
TypeSTANDARD
Decommissioned0
Primary CityGreat Mills
Acceptable Cities—
Unacceptable Cities—
StateMD
LstateMaryland
CountySt. Mary's County
TimezoneAmerica/New_York
Area Codes227, 240, 301
World RegionNA
CountryUS
Latitude38,27
Longitude-76,51