Uniontown WA ZIP Code
Uniontown city is located in Washington State, Whitman County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Uniontown WA zip code by its streets and block numbers if we have some of the Uniontown streets loaded in our website
Uniontown Area Code is 509 and Time Zone is Pacific (GMT -08:00).
Uniontown Zip Code - Washington
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Uniontown City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Uniontown ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Uniontown, Washington.
The Uniontown Zip Code is 99179.
If you want to send a mail to Uniontown City, you should use the 99179 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Uniontown ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 99179 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Uniontown city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Washington.