Board of Supervisors

Board Chambers Security

To increase safety and participation in public meetings. This policy is in effect for all agencies in the County, including the Sonoma County Water Agency, the Community Development Commission, and the Agricultural Preservation and Open Space District

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  • Published on February 15, 2019

    With the Atmospheric River no longer a threat to residents, Sonoma County closed its Emergency Operations Center (EOC) at 12 p.m. today. Although the EOC is closing for this storm, Emergency Management staff will continue to work with partner agencies to monitor conditions. The evacuation advisory issued yesterday for low-lying areas along the Russian River remains in effect until 10:00 p.m. this evening.

  • Published on February 14, 2019
    El último reporte del Centro de Pronósticos de Ríos de California y Nevada indica que el rio Russian alcanzó niveles de inundación mínima y se prevé que alcance su nivel más crítico de desbordamiento, a los 36 pies, en Guerneville el viernes, 15 de febrero, a la 1 de la mañana. Se espera que el nivel del rio regrese a niveles normales, bajo 32 pies, el mismo viernes a las 10 de la noche.
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California State Association of Counties (CSAC)

California State Association of Counties (CSAC) places a strong emphasis on educating the public about the value and need for county programs and services.

National Association of Counties - NACO Logo

The National Association of Counties (NACo) is the only national organization that represents county governments in the United States.

Contact Information

County of Sonoma
Business Hours
Monday – Friday
8:00 AM – 5:00 PM
575 Administration Drive
Room 100 A
Santa Rosa, CA 95403
38.464626, -122.725441

Board Meetings

General Information

Board meetings are generally held every Tuesday at 8:30 am.

Meeting Calendar

Agendas, Minutes & Videos

Frequently Asked Questions

Supervisorial Districts

District Map

Sonoma County District Map

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Assessment Appeals

Assessment Appeals

Assessment Appeals

The Assessment Appeals Board is an independent agency providing taxpayers a means to appeal their property tax assessment.

SB 272

Senate Bill 272 requires local agencies publish a list of systems that serve as original sources of data within an agency.

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