La Mesa Branch Library on Allison Avenue is the fifth-busiest branch in the San Diego County Library system by circulation volume, moving more than 737,000 books, films, and media items per year. The Friends of the La Mesa Library Bookstore operates just inside the front entrance, funding supplemental materials through used-book sales and volunteer-staffed shifts. Established in 1913 and reopened in its current building in 2008, the branch hosts more than 980 free programs annually—storytimes, tech workshops, author events—drawing over 20,000 attendees per year. The branch's 272,000 annual visitors anchor significant foot traffic along La Mesa Village's Allison Avenue, a pedestrian corridor shared with retail neighbors like Better Buzz Coffee La Mesa. Cardholders access the Link+ interlibrary loan network, which extends borrowing privileges beyond the county's 33-branch collection into participating California and Nevada library systems for specialized and out-of-print titles.