ZIP Code 21788 is located in the county of Frederick in the state of Maryland. 21788 ZIP Code is spread between the coordinates of +39.6065590 Latitude and -77.40805903 Longitude. 21788 ZIP Code is part of the 240, 301 area code. There are 0 postal offices in zip code 21788.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21788. 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.