Costco Wholesale
Discount Department Stores & Factory Outlets
- Address
- 28505 Hesperian Blvd, Hayward, CA, 94545
- Phone
- 510-921-3126
- Website
- costco.com
- Hours
- Mo-Fr 09:00-20:30 Sa-Su 09:00-19:00
- Updated
- May 5, 2026
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