The San Mateo County Libraries (SMCL), formerly San Mateo County Library, is a public library system and Joint Powers Authority headquartered in San Mateo, California.

It is a member of the Peninsula Library System.

It serves the smaller cities of San Mateo County who do not have a city library.

The following locations are a part of the system:[6] The bookmobile service travels around the county to various locations like schools, post offices, and even the Hiller Aviation Museum.

This article about a California building or structure is a stub.