ZIP Code 20428
Washington, District of Columbia · District of Columbia
No8548
Zip20428
TypeUNIQUE
Decommissioned0
Primary CityWashington
Acceptable Cities—
Unacceptable CitiesCivil Aeronautics Board
StateDC
LstateDistrict of Columbia
CountyDistrict of Columbia
TimezoneAmerica/New_York
Area Codes202
World RegionNA
CountryUS
Latitude38,89
Longitude-77,03