store:
 location:

US Post Office, 20283 Santa Maria Ave, Castro Valley, California, 94546-9998

Store Hours of Operation, Location & Phone Number for US Post Office


  1. Castro Valley
    20283 Santa Maria Ave Castro Valley CA 94546-9998

    Hours(Opening & Closing Times):
    Mon - Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm Sun Closed

    Phone Number: (510) 581-0159

    Customer Service Email or Contact:
    http://faq.usps.com/adaptivedesktop/faq.jsp?ef=USPSFAQ&dest=EmailUs

The map and information below will help you find the closest US Post Office near you. Need to know what time US Post Office in Castro Valley opens or closes, or whether it's open 24 hours a day? Read below for business times, daylight and evening hours, street address, and more.