Main Library

55 West 3rd Avenue
San Mateo, CA 94402

Phone: (650) 522-7800
Fax: (650) 522-7801

Accounts (Circulation)
(650) 522-7833

Children's Desk
(650) 522-7838

Adult Reference Desk
(650) 522-7818

Fiction & Audiovisual

(650) 522-7817

All Library branches are closed to the public and all events and room reservations have been cancelled. Please visit www.cityofsanmateo.org/coronavirus for more information.

Curbside holds pickup service is available at the Main, Hillsdale, and Marina Libraries.  Due to varying staff levels and limited deliveries, the Library will need more time to fulfill holds. Please allow up to two weeks for your holds to arrive from other PLS libraries. Wait for a notification that your holds are available for pickup before making an appointment.  

Overdue fees will not be incurred for items due.  Checked out library items can be returned at the Main, Hillsdale, and Marina Libraries during book drop open hours.  

For more information please see our library closure FAQs.

See Holiday Hours

Parking


The Main Library has two levels of underground parking, including handicapped spaces. Parking is free but limited to two hours. The entrance is to the garage is on West 3rd Avenue. An elevator is available to take you to the ground level. The garage is open during library business hours.

Directions


Going South on Highway 101
Take the 3rd Avenue exit. Go west on 3rd Avenue about one mile. The library will be on the left side of 3rd Avenue after you cross El Camino Real.

Going North on Highway 101

Take the 3rd Avenue exit. Go west on 3rd Avenue. Drive about one mile. The library will be on the left after you cross El Camino Real.

Going South on El Camino Real
Turn right onto West 3rd Avenue. The library will be on the left.

Going North on El Camino Real
Turn left onto West 3rd Avenue. The library will be on the left.

Public Transportation


By Train: Caltrain serves downtown San Mateo. Exit the train at the San Mateo stop. Walk south on B Street. At 3rd Avenue, walk west. The library is at 55 West Third Avenue. View Caltrain Schedule
 
By Bus: SamTrans is available. Routes 250, 252, 295, and ECR stop in downtown San Mateo. View SamTrans Schedule