Dedicated to the citizens of Mason County, Washington since 1886
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In accordance with WAC 458-12-360 & RCW 84.40.045, the Mason County assessor announces the countywide mailing of our annual Notice of Value on or before Oct. 14. These notices represent value as of Jan. 1, 2024, for taxes payable in 2025, which was based upon 2023 and prior sales data. In accordance with state law, properties must be assessed at 100% of market value; this is based upon sales data of similar homes within your area. Mason County is divided into six geographic areas for...