Fiscal year ending 2024. Filed on November 14, 2025.
PO Box 1366
Shelton, Washington 98584
Mason County Historical Society (EIN: 91-6176074) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2024 IRS Form 990 filing, Mason County Historical Society, a 501(c)(3) charitable organization, reported compensation for 9 employees. Among the employees shown here, the average compensation is $34,102. The highest compensated employee at Mason County Historical Society is Elizabeth Arbaugh with fiscal year 2024 compensation of $34,102.
Revenue
Expenses
Employee compensation
HISTORICAL EDUCATION
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