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Administrative Office


Administrative Office

San Mateo County Libraries

Administers the 12 branches of the county library system.


The County Library System, consisting of 12 branch libraries, a bookmobile and a central administrative facility, offers information and reference services, book and media collections, large-print books and magazines, online resources, literacy programs, Coastside bookmobile services and special programs for adults and children. Contact the individual libraries or the Web site for additional programs, services and unique collections as well as to find out days and hours of operation. Atherton Library - 2 Dinkelspiel Station Lane (650-328-2422) Belmont Library - 1110 Alameda de las Pulgas (650-591-8286) Bookmobile - 125 Lessengia Court, San Mateo (650-312-5271) Brisbane Library - 250 Visitacion Avenue (415-467-2060) East Palo Alto Library - 2415 University Avenue (650-321-7712) Foster City Library - 1000 East Hillsdale Blvd. (650-574-4842) Half Moon Bay Library - 620 Correas Street (650-726-2316) Millbrae Library - 1 Library Avenue (650-697-7607) Pacifica Library - 104 Hilton Way (650-355-5196) Portola Valley Library - 765 Portola Road (650-851-0560) San Carlos Library - 610 Elm Street (650-591-0341) Sanchez Library - 1111 Terra Nova Blvd., Pacifica (650-359-3397) Woodside Library - 3140 Woodside Road (650-851-0147) Go to the Web site at for more information.


Public Transit:

SAMTRANS stops within 3 blocks.
125 Lessingia Court, San Mateo, CA 94402-4000 37.5102705 -122.3352206 Government

Service Options

Languages Spoken:

  • Spanish

Accessibility Options:

  • Disabled Parking
  • Disabled Restroom
  • Ramp
  • Wheelchair



$5 inter-library loan fee (outside the county), $.75 reserve fee (inside the county).


Resident of California

How to Apply:

To receive a library card present proof of name and address. Special arrangements can be made for homeless persons.

Service Wait Estimate:

No wait.

Service Areas:

  • Atherton
  • Belmont
  • Brisbane
  • East Palo Alto
  • Foster City
  • Half Moon Bay
  • Millbrae
  • Pacifica
  • Portola Valley
  • San Carlos
  • Unincorporated San Mateo County
  • Woodside