The new Glen Park Branch opened on October 13, 2007.
Glen Park Branch Library first opened in January 1927, at 700 Bosworth Street. The branch was located at that site for almost 38 years, until the building that housed it was demolished during construction of Interstate 280. Glen Park Branch was then housed in several different locations over the course of 42 years until a multiuse building was constructed in the neighborhood at 2825 Diamond Street. Part of the new building was designated just for the library. The branch opened on October 13, 2007 and became the sixth branch to be renovated through the Branch Library Improvement Program.