Skip to Content

Human Services Department

Human Services Department

Administrative Services Division

Many hands working over paperwork

Client Advocacy 

Resolves disputes between applicants and recipients of public social services in​​ an impartial, independent, fair, and timely manner, ensuring that due process is met in accordance with federal and state law.

Disaster Planning & Emergency Response

Supports the Department and County residents in disaster preparedness and emergency response in the event of fires, natural disasters and PSPS events.


Provides fiscal services including payment and revenue claiming services for the Department, financial reporting, contracts administration, and facilities management.

Human Resources

Coordinates personnel services including payroll, recruitment and hiring, staff development and training, employee and labor relations.

Information Technology

Offers the Department various technological solutions and support to staff and clients, implements and enforces security protocols, and maintains data systems that store and process data related to social service programs and outcomes.

Planning, Research, Evaluation & Engagement (PREE)

Leads the Department in policy and planning, data reporting, evaluation, outcomes measurement, contracts, communications and media relations.

South County Center / Satellite Offices

HSD is located at various sites throughout Sonoma County including the South County Center located at 5350 Old Redwood Highway North, Suite 100, Petaluma, CA 94954.  The Sonoma Valley Hub is located at 19080 Lomita Avenue, Sonoma, CA 95476.

Special Investigations Unit

Investigates reports of welfare benefit fraud in public assistance programs. This includes General Assistance, Food Stamps, and Cash Aid. SIU also investigates identity theft if it relates to public assistance.