In Person:
You can pay by cash or check in person at any of our library locations during open hours.
Please make the check payable to Contra Costa County Library.
By Mail:
You can mail a check made payable to Contra Costa County Library to:
Contra Costa County Library
Attn: Circ Admin Staff
777 Arnold Drive, Suite 210
Martinez, CA 94553
Online:
You can also pay online through your library account.