ZIP Code 20660 is located in the county of St. Mary's in the state of Maryland. 20660 ZIP Code is spread between the coordinates of +38.3709576 Latitude and -76.70410226 Longitude. 20660 ZIP Code is part of the 240 area code. There are 0 postal offices in zip code 20660.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 20660. 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.