The Crowell Public Library of the City of San Marino is a public library dedicated to serving the educational, cultural, and recreational interests of its community members of all ages. It functions as a gathering place, an information center, and a technology hub, offering a collection of books and media. The library provides access to print and digital materials, supports literacy and lifelong learning through various programs and workshops, and fosters a sense of community. It also offers internet access, study rooms, and hosts an art gallery. The library is supported by the San Marino Public Library Foundation and the Friends of the Crowell Public Library, non-profit organizations that help fund its collections and special services.


