ZIP Code 21204 is located in the county of Baltimore in the state of Maryland. 21204 ZIP Code is spread between the coordinates of +39.4044756 Latitude and -76.62326862 Longitude. 21204 ZIP Code is part of the 410, 443, 667 area code. There are 3 postal offices in zip code 21204.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21204. 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.