ZIP Code 21758
Knoxville, Maryland · Frederick County
No9175
Zip21758
TypeSTANDARD
Decommissioned0
Primary CityKnoxville
Acceptable CitiesBrunswick
Unacceptable Cities—
StateMD
LstateMaryland
CountyFrederick County
TimezoneAmerica/New_York
Area Codes227, 240, 301, 304, 540, 681, 826
World RegionNA
CountryUS
Latitude39,35
Longitude-77,64