The San Mateo County Libraries app is your connection to the librarys services from your mobile device. Check your account, pay fines, renew items, search the catalog, place holds and use your digital library card.
Find upcoming events, read our blogs, get directions to the nearest San Mateo County Libraries branch, and get easy access to our digital collection like eBooks/eAudiobooks, eVideos, eMusic and eMagazines.