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Visit the San Marcos Library 

The San Marcos Library is part of the County of San Diego library system and operated by the county.  It's conveniently located at the City Hall campus.

San Marcos Library
2 Civic Center Drive
San Marcos, CA 92069 
(760) 891-3000

Please be advised, the San Marcos Branch Library will be closed temporarily for building improvements from Monday, Sept. 8, through Saturday, Nov. 29, 2025. This closure is to ensure safety during construction. 

Hours
Monday & Thursday | 10 am - 6 pm
Tuesday & Wednesday | 12 pm - 7 pm
Fri., Sat., Sun. | 10 am - 5 pm