Sonoma County Holidays 2025. Learn about all the state holidays in balance of sonoma county, california in 2025 including dates, observances, and activities. Learn about all the state holidays in sonoma county, california in 2025 including dates, observances, and activities.
Most sonoma county offices closed This side letter of agreement by and between the county of sonoma (county) and the service employeesโ international union local 1021 (union),.