ZIP Code 99320 is located in the county of Benton in the state of Washington. 99320 ZIP Code is spread between the coordinates of +46.2730752 Latitude and -119.47626543 Longitude. 99320 ZIP Code is part of the 509 area code. There are 0 postal offices in zip code 99320.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 99320. 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.