Washington State Public Holidays 2025. Learn which holidays are observed by king county government. Here you will find the public holidays for washington of the current year ( 2025 ), of the following two years ( 2025 ), ( 2026 ), as well as of the past year ( 2023 ).

Washington state 2025 holidays, special days and observances : These dates may be modified as official changes are announced, so please check back regularly for updates.