The San Marcos Library is operated by the County of San Diego. It is located at 2 Civic Center Drive, on the campus with City Hall and the Community Center.
San Marcos Library
2 Civic Center Drive
San Marcos, CA 92069
Monday-Thursday, 9:30 am to 8 pm
Friday and Saturday, 9:30 am to 5 pm
Sunday, 12 to 5 pm