ZIP Code 21810
Allen, Maryland · Wicomico County
No9210
Zip21810
TypePO BOX
Decommissioned0
Primary CityAllen
Acceptable Cities—
Unacceptable Cities—
StateMD
LstateMaryland
CountyWicomico County
TimezoneAmerica/New_York
Area Codes410, 443, 667
World RegionNA
CountryUS
Latitude38,29
Longitude-75,69