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County of San Mateo

County of San Mateo

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The County of San Mateo’s departments and are located primarily on the main County Center campus in Redwood City with other offices located countywide. The Board of Supervisors’ district offices are also at County Center. Please use the maps and links below to locate the department or service you’re seeking.

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CONTACT US

County of San Mateo

400 County Center, Redwood City, CA 94063

(650) 363-4000

Office hours are M-F (holidays excepted) 8:00 a.m. to 5:00 p.m.

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