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Read Contra Costa

Read Contra Costa encourages all county residents and library users to read and discuss the same book. Vote today to help select which book.
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Social Media Ambassadors

Help us spread the word about all the amazing services, resources and programs at the Library. Sign up to be a Social Media Ambassador.
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Career Online High School

Contra Costa County Library is offering adults the opportunity to earn a high school diploma with Career Online High School.
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Upcoming Events

Featured Booklist

Black Birders Week 2022

Celebrate Black, Indigenous, and People of Color in STEM and be inspired to get outside. May 29-June 4, 2022.

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