ZIP Code 20620
Callaway, Maryland · St. Mary's County
No8662
Zip20620
TypeSTANDARD
Decommissioned0
Primary CityCallaway
Acceptable Cities—
Unacceptable Cities—
StateMD
LstateMaryland
CountySt. Mary's County
TimezoneAmerica/New_York
Area Codes227, 240, 301
World RegionNA
CountryUS
Latitude38,23
Longitude-76,51