ZIP Code 21540 is located in the county of Allegany in the state of Maryland. 21540 ZIP Code is spread between the coordinates of +39.4759912 Latitude and -79.05882998 Longitude. 21540 ZIP Code is part of the 301 area code. There is 1 postal office in zip code 21540.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21540. 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.