ZIP Code 99021 is located in the county of Spokane in the state of Washington. 99021 ZIP Code is spread between the coordinates of +47.7938346 Latitude and -117.32134449 Longitude. 99021 ZIP Code is part of the 509 area code. There are 0 postal offices in zip code 99021.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 99021. 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.