ZIP Code 20723 is located in the county of Howard in the state of Maryland. 20723 ZIP Code is spread between the coordinates of +39.1298807 Latitude and -76.85654566 Longitude. 20723 ZIP Code is part of the 240, 301, 410, 443 area code. There are 0 postal offices in zip code 20723.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 20723. 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.