Mason County, Washington Zip Codes

Zip Code	City	Population
98584	Shelton	38,615
98528	Belfair	12,393
98524	Allyn	4,226
98546	Grapeview	2,965
98548	Hoodsport	2,593
98592	Union	1,848
98588	Tahuya	1,564
98555	Lilliwaup	238
98560	Matlock	76

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.