Castro Valley Zip Codes - Alameda County CA

Castro Valley, CA Zip Code Map

Castro Valley, CA is a city located in Alameda County, California and has a land area of 67.76 square miles (175.50 km2). The water area for the city is 1.55 square miles or 4.01 km2. There are 2 total unique zip codes in Castro Valley, California. The area code(s) for Castro Valley is 510/341.

Zip Codes for Castro Valley, CA (2)
Zip Code
 City County
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94546 Castro Valley Alameda
94552 Castro Valley Alameda

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