ZIP Code 21046 is located in the county of Howard in the state of Maryland. 21046 ZIP Code is spread between the coordinates of +39.1703857 Latitude and -76.85020421 Longitude. 21046 ZIP Code is part of the 301, 410, 443, 240 area code. There is 1 postal office in zip code 21046.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21046. 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.