The mission of the library is to provide information, educational and recreational materials, and lifelong learning opportunities to all residents of Siskiyou County. The library offers books, magazines, newspapers, media and electronic resources for county citizens free of charge. The library also supplies public Internet access, Interlibrary loan services, and delivery of materials between its 12 branch sites.
Citizens throughout the county can find a library to use as the Siskiyou County Library System operates 12 facilities all of which provide public computers and traditional library materials. Although some of the branches are small in size, patrons have access to all of the materials in the system through a weekly delivery service. The Yreka branch is the headquarters for the Siskiyou County Library System with 11 other branches located in the following areas: Montague, Dorris, Tulelake, Fort Jones, Etna, Happy Camp, Scott Bar, Weed, McCloud, Mt. Shasta and Dunsmuir. To help provide these rural communities with a public library, Siskiyou County Library partners with the cities and service districts to share costs of facilities.