Spring Book Sale

Mark your calendars now for the Friends of the Castro Valley Library 2025 Spring Book Sale:

• Friday, April 25th from 6 - 8 p.m. (Members-Only Preview Night)
• Saturday, April 26th from 10 a.m. - 4 p.m.
• Sunday, April 27th from 1 - 4 p.m. (It's Bag Day, where a bag of books is only $5, and we supply the bags!)

Members planning to attend? Please remember to bring your current (2025) Friends of the Castro Valley Library membership card on Friday and Saturday in order to take advantage of your $2.00 discount.

You can join or renew at the door, or purchase a 2025 membership ahead of time. 

Friends of the Castro Valley Library

Friends of the Castro Valley Library is a non-profit 501(c)(3) organization serving our community and supporting the Castro Valley Library by providing funds for library services, organizing fund raising and community activities, advocating at the local, state and national level for public support of libraries and developing an active and well-informed membership.

Our BookStore contains over 2500 almost new and used books, audio books, CDs and DVDs with a constant turnover of the inventory. Only the best quality of all the donated books are sold in the store. Special books may be sold online through Ebay. In addition, each year over 1200 boxes of good quality books and audio-visual materials are put in temporary storage for our three annual weekend Book Sales. Remaining books are donated to deserving organizations and programs throughout Alameda County.