ZIP Code 99143 is located in Whitman county in the state of Washington. 99143 ZIP Code is spread between the coordinates of +46.759878 Latitude and -117.728679 Longitude. 99143 ZIP Code is part of the 509 area code. There are 2 postal offices in zip code 99143 which we have listed below.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 99143. 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.