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Post office · Alameda County, CA

Castro Valley Branch Post Office

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20283 SANTA MARIA AVENUE
Alameda County, CA
Address
20283 Santa Maria Avenue, Alameda County, CA
Opening hours
Not recorded. Please call ahead before visiting.
Coordinates
37.697456, -122.078980

This listing is based on OpenStreetMap data (updated 2026-10-06). Something wrong? Fix it on OpenStreetMap or let us know.

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Where is Castro Valley Branch Post Office?

Castro Valley Branch Post Office is located at 20283 Santa Maria Avenue, Alameda County, CA. Use “Get directions” to start a route from where you are.