The Glen Park Branch Library originally opened in January 1927 at 700 Bosworth Street, serving the community for nearly 38 years. The original building was demolished during the construction of Interstate 280, and for the next 42 years, the branch operated out of various temporary locations.
 

A permanent home was finally established at 2825 Diamond Street, within a newly constructed multi-use building that includes dedicated space for the library. The new Glen Park Branch officially opened on October 13, 2007, becoming the sixth branch to be renovated under the Branch Library Improvement Program.