Libraries in Castro Valley, CA Alameda County Offices Libraries3600 Norbridge AveCastro Valley, CA, 945465106677900LibrariesLibraryPublic LibraryCastro Valley Library20055 Redwood RdCastro Valley, CA, 945465106706280LibrariesLibraryPublic LibraryCastro Valley Library3600 Norbridge AveCastro Valley, CA, 945465106677900LibrariesLibraryPublic LibraryShow More