Zip Code 20818 is located in Cabin John, Montgomery county in the state of Maryland. 20818 Zip Code is spread between the coordinates of +39.128407 Latitude and -077.180053 Longitude. 20818 Zip Code is part of the 301 area code. There is 1 postal office in zip code 20818 which we have listed below
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 20818. 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.