ZIP Code 20899
Gaithersburg, Maryland · Montgomery County
No8850
Zip20899
TypeUNIQUE
Decommissioned0
Primary CityGaithersburg
Acceptable Cities—
Unacceptable CitiesNatl Inst Stds & Tech Md
StateMD
LstateMaryland
CountyMontgomery County
TimezoneAmerica/New_York
Area Codes227, 240, 301
World RegionNA
CountryUS
Latitude39,14
Longitude-77,22