Date of Formation: April 19, 1856
Services Provided: Assessor-county clerk-recorder, coroner, corrections, elections, emergency services, environmental management, health services, parks and recreation, planning, probation, public works, sheriff, social services, plus various municipal services in unincorporated areas
Area: 455 square miles
Population: 774,485 (CA Department of Finance 2019)
- View County Website
- View County Map
- View County Budget
General Inquiries: (650) 363-4123
Hours: 8:00 am – 5:00 pm, Monday through Friday
MICHAEL CALLAGY, County Executive Officer/Clerk of the Board
Board of Supervisors
The San Mateo County Board of Supervisors is composed of five members elected to four-year terms by the public in their respective districts (see FIND YOUR DISTRICT on the Board of Supervisors website).
See Public Meetings on the county website for the current meeting schedule.
All meetings are held at the Board of Supervisors’ Chambers, 400 County Center, Redwood City, CA 94063
Meeting time is 9:00 am unless otherwise noted in the agenda. Future agendas are posted one week prior to the meeting date.