ZIP Code 21722 is located in the county of Washington in the state of Maryland. 21722 ZIP Code is spread between the coordinates of +39.6642040 Latitude and -77.90491365 Longitude. 21722 ZIP Code is part of the 301 area code. There are 0 postal offices in zip code 21722.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21722. 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.