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Friends of the Martinez Library is a non-profit organization dedicated to supporting the Martinez Library. Through membership donations and book sales, we help fund special programs and library upgrades.

Visit our bookstore, located in the library on the lower level. We sell books, DVDs and CDs at fantastic prices.  


Our Bookstore hours are Tuesday to Saturday, 12 to 4 p.m.
If you’d like to volunteer at our bookstore or quarterly book sales, email us at

Follow us on Facebook.

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The Library We Serve


The Martinez Library, completed in 1941, is located in an historic downtown waterfront community that is also the county seat of Contra Costa County. The Library provides public internet computers, free Wi-Fi, a steady supply of new materials in various formats, and regular programming for children, teens and adults. 


The library also houses a small historical collection that includes works by many famous local and state figures, including Martinez resident John Muir. Hanging in the library are portraits of Dr. and Mrs. John Strentzel painted by Muir’s friend and noted California artist William Keith. 

Martinez Library Hours

Tuesday: 12 - 8 p.m.

Wednesday/Thursday: 10 a.m.- 6 p.m.

Friday/Saturday: 9 a.m. - 5 p.m.

Follow the Martinez Library on Facebook.

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