Union Zip Codes - Mason County WA

Union, WA Zip Code Map

Union, WA is a city located in Mason County, Washington and has a land area of 17.68 square miles (45.79 km2). The water area for the city is 3.93 square miles or 10.18 km2. There is one unique zip code in Union, Washington and it is 98592. The area code(s) for Union is 360/564.

Zip Codes for Union, WA (1)

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98592 Union Mason

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