ZIP Code 21866 is located in the county of Somerset in the state of Maryland. 21866 ZIP Code is spread between the coordinates of +37.9672977 Latitude and -76.02198066 Longitude. 21866 ZIP Code is part of the 410 area code. There is 1 postal office in zip code 21866.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21866. 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.