ZIP Code 21104 is located in the county of Carroll in the state of Maryland. 21104 ZIP Code is spread between the coordinates of +39.3561301 Latitude and -76.91892421 Longitude. 21104 ZIP Code is part of the area code. There are 0 postal offices in zip code 21104.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21104. 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.