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All Legal Issues
Accidents & Injuries
Business Law
Bankruptcy & Debt
Motor Vehicles
Consumer Rights
Human Rights
Criminal Defense
Divorce & Family Law
Employees Rights
Estate Planning
Health Care
Immigration Law
Intellectual Property
Lawsuits & Disputes
Money Matters
Real Estate
Other Topics
About Castro Valley,California
Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2010 census, it was the fifth most populous unincorporated area in California. The population was 66,441 at the 2020 census.
Castro Valley is named after Guillermo Castro, a noted 19th-century Californio ranchero who owned the land where the community is located.