Departments & Agencies

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  • AGOSP_75.png
    Use a sales tax for the purchase of conservation easements to protect agricultural lands and preserve open space.
  • ag_weights_75.png
    Enforces the laws and regulations of the California Food and Agriculture Code and the California Code.
  • Sonoma County is served by two air quality districts with distinct boundaries, jurisdictions, rules, and policies: Northern Sonoma County Air Pollution Control District (NSCAPCD) and Bay Area Air Quality Management District (BAAQMD).
  • Sonoma County Animal Services Logo
    We are committed to serving the public in the care and well being of animals, both domestic and livestock, throughout the unincorporated areas of Sonoma County, the city of Santa Rosa and the town of Windsor.
    Animal Services is a part of Health Services.
  • Sonoma County Clerk-Recorder Seal
    Assessor and is responsible for providing accurate and timely property assessments and for determining eligibility for various property tax exemptions and exclusions.
  • Provides quality financial services, oversight and accountability.
  • Sonoma County Seal 75x75
    The Board of Supervisors sits as the governing board of Sonoma County and of various special jurisdictions.
  • Supervisor Susan Gorin

    Location: Southeast

    The City of Santa Rosa (Bennett Valley, Rincon Valley and the community of Oakmont), City of Sonoma and the adjacent unincorporated communities of Kenwood, Agua Caliente, Glen Ellen, El Verano, Boyes Hot Springs, Schellville and Vineburg.

  • Supervisor David Rabbitt 2nd District

    Location: Southwest

    The City of Petaluma, City of Cotati, a portion of Rohnert Park and the unincorporated communities of Penngrove, Two Rock and Bloomfield.

  • Supervisor Chris Coursey

    Location: Central

    Most of central Santa Rosa and the City of Rohnert Park (east of Highway 101).

  • James Gore

    Location: Northeast

    Northwest Santa Rosa (Fulton and Larkfield-Wikiup area), Town of Windsor, City of Healdsburg, community of Geyserville and the City of Cloverdale.

  • County of Sonoma Supervisor Lynda Hopkins 5th District thumbnail

    Northwest Sonoma County: Sonoma County coast, lower Russian River area, Sebastopol and the west and southwest Santa Rosa areas (extending into Highway 101).

  • Airport listing page logo
    The Charles M. Schulz - Sonoma County Airport (STS) offers nonstop service to and from Los Angeles, Seattle, Portland, and San Diego, as well as amenities such as affordable parking, shorter lines, and fine dining.
  • The Department of Child Support Services (DCSS) establishes and enforces court orders for child support, paternity and medical coverage; Assists with locating the parents; Collects and distributes support payments; Maintains accounting records of all payments made and past due; Modifies court orders when appropriate; and provides legal and case management services to ensure child and medical support orders are maintained.

  • Sonoma County Clerk-Recorder Seal

    The County Clerk-Recorder Division of the Sonoma County Clerk-Recorder-Assessor Department has a variety of duties, including issuing marriage licenses, filing fictitious business name statements, processing notary bonds, handling environmental documents, performing civil marriage ceremonies, recording documents including deeds, maps and liens as well as maintaining cross-reference indexes for these documents. The recorded documents are open for public inspection.

    Clerk-Recorder's Office is a part of Clerk • Recorder • Assessor • Registrar of Voters.
  • Coastal Valleys EMS Agency Logo
    The Coastal Valleys Emergency Medical Services (EMS) system has been designed to incorporate these agencies and facilities into a dynamic emergency medical care delivery system that is focused on rapid access to emergency locations, patient assessment, stabilization of patients and their transportation.
  • CDC thumbnail for listing page
    The Community Development Commission is dedicated to promoting decent and affordable housing.
  • County Seal Listing
    The County Administrator’s Office assists the Board of Supervisors in managing, directing and coordinating.
  • The County Counsel's Office is committed to providing the highest quality legal representation.
  • Courts logo thumbnail
    Find info for Jury Duty, Traffic Tickets, Court Calendars, Recently Filed Cases and Family Law.
  • Department of Emergency Management Sonoma County

    The Department of Emergency Management is responsible for the planning, coordination of response, recovery, and mitigation activities related to county-wide emergencies and disasters; serving as the primary coordination point for emergency management's communication flow between the Federal, State, and local levels; developing emergency operation plans for the county, cities, and districts; conducting training and educational outreach programs related to emergency preparedness; and sponsoring emergency management training.

  • District Attorney logo thumbnail
    Responsible to prosecute all criminal matters in the County of Sonoma
  • Sonoma County EDB
    Whether you are a small start-up or established company looking to grow, the EDB offers a range of direct services to help your business every step of the way.
  • Department of Health Services logo
    Our programs promote health and quality of life by preventing or controlling those diseases or deaths that result from interactions between people and the places they live, work and play.
    Environmental Health and Safety is a part of Health Services.
  • Fairgrounds thumbnail
    Famous for its top quality horse racing, stunning flower show, and constant innovations in family entertainment.
  • boy-paper-airplane-foster-75px

    Family, Youth and Children's Services helps keep Sonoma County children and teens safe through foster care, child protection services (CPS) and social services support for families. Staff investigate reports of child abuse, neglect or abandonment. Children may stay temporarily at the Valley of the Moon Children's Home. Staff train mandated reporters about child abuse prevention and reporting. Santa Rosa, California.

  • GS thumbnail
    Provides services to other County departments that in turn provide services directly to the public.
  • Independent Institution with the principal function of overseeing all aspects of county, special- Districts and city Government.
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    Promoting and protecting the health and well-being of every member of our community.
  • HR logo thumbnail
    The employees of the Human Resources Department are eager and ready to help you learn about our services and the employment opportunities here at Sonoma County.
  • HSD Logo
    Search or train for jobs, apply to receive money for food or medical care, learn more about veterans benefits and services, report child or elder abuse, become a foster parent or adopt a Sonoma County child.
  • IOLERO logo

    IOLERO’s mission is to strengthen the relationship between the Sheriff’s Office and the community it serves through outreach and the promotion of greater transparency of law enforcement operations.

  • ISD Listing Page Logo
    The Information Systems Department is responsible for providing leadership,support and coordination of technological efforts in most County departments.
  • LAFCO logo
    The Local Agency Formation Commission (LAFCO) was created by State law in 1963 to regulate the boundaries of cities and special districts.
  • Law Library Thumbnail
    The Sonoma County Public Law Library, is a reference resource for legal research, supported by the community and open to the general public.
  • County Seal

    In the summer of 2020, the Sonoma County Board of Supervisors created the Sonoma County Office of Equity and took a meaningful step to recognize and celebrate our powerful role in unseating racial inequity in our communities.

  • County Seal

    En el verano del 2020, la Junta de Supervisores del Condado de Sonoma creó la Oficina de Equidad tomando un paso significativo para reconocer y celebrar nuestro poderoso rol en derrocar inequidades raciales en nuestras comunidades.

  • Permit Sonoma

    Permit Sonoma is Sonoma County's consolidated land use planning and development permitting agency. Virtually any land development or construction that takes place in the unincorporated area of Sonoma County (outside the nine incorporated cities) is reviewed, permitted, and inspected by Permit Sonoma.

  • Probation Thumbnail
    The Probation Department is committed to Changing Lives, Reducing Crime, and Restoring Community.
  • Has the mandated responsibility of defending any person who is not financially able to employ counsel.
  • Parks logo thumbnail
    From the ocean to the redwoods to the Russian River, our parks are here for you to enjoy.
  • Sonoma County Elections Mobile App -

    The Registrar of Voters Office is a division of the County Clerk-Recorder-Assessor’s Department, under the direction of an elected County Clerk. The Registrar of Voters Office performs a range of election-related duties, in addition to other public services that increase citizen participation and education.

    Registrar of Voters Office is a part of Clerk • Recorder • Assessor • Registrar of Voters.
  • SCERA logo
    SCERA is administered by the Board of Retirement (Board) to provide retirement, disability, death, and survivor benefits for its employees under the California State Government Code, Section 31450 et.seq. (County Employees' Retirement Law of 1937) and the California Public Employees Pension Reform Act of 2013.
  • Sheriff logo thumbnail
    Commit to provide professional, firm, fair and compassionate law enforcement and detention services with integrity and respect.
  • Sonoma County Transit
    Sonoma County Transit provides provides high-quality yet cost-effective local and intercity public transportation throughout most of the major communities in Sonoma County, as well as Novato and San Rafael in Marin County.
  • Sonoma County Transportation Authority Logo
    The SCTA RCPA acts as the countywide planning and programming agency for transportation and coordinates climate protection activities countywide.
  • TPW logo thumbnail
    A commitment to provide quality transportation and public works services within Sonoma County in a responsive and professional manner.
  • UC Cooperative Extension
    In Sonoma County, the UC Cooperative Extension academic staff is at the forefront of change, working to preserve agriculture, helping communities shape wise public policy, and strengthening community development and leadership in our youth and adults.
  • 75x75_SCWMA_Logo
    It’s our job to inform local residents and businesses of ways they can help reduce, reuse and recycle their solid waste and properly dispose of hazardous materials.
  • Sonoma Water logo
    Development of a secure, clean and renewable energy portfolio to insulate the region’s water supply from outside supply and price shocks, ensuring reliability.
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About Sonoma County

Sonoma County Tourism
Sonoma County was named the top wine destination in the U.S. by TripAdvisor's Travelers' Choice Awards in 2012.

Sonoma County Connections
Thinking of relocating to Sonoma County? Need answers to all the who, what, where, when, and how questions? Sonoma County Connections has your answers!

Boards, Commissions and Committees

Special District Information