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Alameda County, CA,
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County of Alameda Administration Building
1221 Oak Street, #536, Oakland, CA 94612
Alameda County Board of Supervisors
Photo of location in Hayward with a photo of Supervisor Richard Valle, District 2.

Please consider using public transit to visit our offices. Select the following link to plan your visit:

Contact Us

County Office
1221 Oak Street, #536
Oakland, CA 94612 Map
Phone: 510.272.6692
Fax: 510.271.5115

District Office
24301 Southland Drive, Suite 101
Hayward, CA 94545 Map
Phone: 510.259.1097
Fax: 510.259.0860

Click on a staff member's name below to email them.

Staff Responsibilities
Ginny DeMartini
District Director
  • District Office Management
  • Health Care
  • Housing/Homeless
  • Mental Health
  • Social Services
  • Tennyson Corridor Initiative
  • Volunteer Dinner
  • Hayward
Michelle Dianda
Supervisor's Assistant
  • Boards and Commissions
  • Office Administration
  • Scheduling
  • Website and Newsletter
Chris Miley
Deputy Chief of Staff
  • Association of Bay Area Governments
  • Niles Canyon Multi-Use Trail
  • Public Protection Committee
  • Seniors and Persons with Disabilities
  • Transportation and Land-Use
  • Website and Newsletter
  • Newark and Sunol
Nancy Sa
Supervisor's Assistant
  • Habitat Restoration Project
  • Science in the Park
  • Seniors/Persons with Disabilities
  • Urban Farming

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