Zip Code 21640 is located in Henderson, Caroline county in the state of Maryland. 21640 Zip Code is spread between the coordinates of +39.081351 Latitude and -075.811781 Longitude. 21640 Zip Code is part of the 410 area code. There are 0 postal offices in zip code 21640 which we have listed below
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21640. 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.