Mason County, Washington GenealogyEdit This Page
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1854--Mason County was created 13 March 1854 from Thurston County. Originally known as Sawamish County until January 3, 1864. County seat: Oakland (1854-1888) and Shelton, originally Sheltonville (1888- present).
Places / Localities
Societies and Libraries
- Family History Library Catalog for this county.