ZIP Code 20830 is located in the county of Montgomery in the state of Maryland. 20830 ZIP Code is spread between the coordinates of +39.14 Latitude and -77.08 Longitude. 20830 ZIP Code is part of the 240 area code. There are 0 postal offices in zip code 20830.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 20830. 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.