The Sierra Madre Public Library, begun in 1887, is the fourth oldest city library in Los Angeles County and the tenth oldest in Southern California. The current building of 8,762 square feet houses a collection of about 70,000 cataloged items, a historical archives collection, free Wi-Fi, eBooks and DVDs. The Library Services Department is one of seven departments of the City of Sierra Madre and offers a wide range of library services to adults, teens and children. Services are expanded through participation in the Southern California Library Cooperative, a network of 39 area libraries.
The Sierra Madre Public Library's digital collection at California Revealed consists of text from throughout the 20th century. The collection includes a sketch book by Bernhardt Wall, a dictionary of Sierra Madre edited by J.G. Blumer, and thousands of issues of the Sierra Madre News from 1906 to 1999.