Castro Valley Local News: Topix.net: Local, regional, and statewide news collected from diverse sources on the web.
Castro Valley Online: Contains a map of the town and links to member sites.
Lake Chabot: Site dedicated to preserving the natural beauty of Anthony Chabot Regional Park includes information about the lake, rare plants, and preservation activities.
LouSan Bed and Breakfast: Luxury lodgings serve breakfasts from "Treasures from Our Mothers' Kitchens." Rooms, rates, and directions.
MyCastroValley.com: Community portal featuring a history of the town, message boards, news, and a directory of businesses, schools, and local government offices.