ZIP Code 21638 is located in the county of Queen Anne's in the state of Maryland. 21638 ZIP Code is spread between the coordinates of +38.9498711 Latitude and -76.20140112 Longitude. 21638 ZIP Code is part of the 410 area code. There is 1 postal office in zip code 21638.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21638. 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.