ZIP Code 21780 is located in the county of Frederick in the state of Maryland. 21780 ZIP Code is spread between the coordinates of +39.6790231 Latitude and -77.47115867 Longitude. 21780 ZIP Code is part of the 240 area code. There is 1 postal office in zip code 21780.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21780. Always when you mail a package or a letter, be attentive to mention the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in unforseen delays.