Union WA ZIP Code

Union city is located in Washington State, Mason County and has a unique zip code assigned by the US Postal Service Office.


You can search for the Union WA zip code by its streets and block numbers if we have some of the Union streets loaded in our website

Union Area Code is 360 and Time Zone is Pacific (GMT -08:00).



Union Zip Code - Washington

The US ZIP Code basic format consists of five decimal numerical digits assigned to the Union City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Union ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Union, Washington.

The Union Zip Code is 98592.



If you want to send a mail to Union City, you should use the 98592 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Union 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 98592 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Union 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.


Union, Washington - MAP




What is the Union Zip Code?

The Union Zip Code in Washington is 98592.


ZIP Plus 4 Union - US Streets Zip Codes

By pressing keys ctrol + F you can search Union zip codes by its streets, highways, and know the ZIP+4 US ZIP Code


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Search Union Zip Code

What is the zip code for Union WA?

98592

Union, Washington - US Zip Code



Union ZIP Code Lookup

98592 Zip Code File:
Zip Code: 98592,
City: Union
Union Area Code: 360
Union, WA - Time Zone: Pacific (GMT -08:00)
County: Mason
City Alias: Union
State: Washington
State Abb: WA



Washington Zip+4 - Nearby Union Cities

Cities near Union in Washington
(straight line)


View more Washington zip codes