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The Costco store can be found in Fullerton, CA on S Harbor Blvd 900. Is Costco open today? Yes, Costco store in Fullerton is open. You can shop today from 10:00 AM to 08:30 PM.
|Monday||10:00 AM - 08:30 PM|
|Tuesday||10:00 AM - 08:30 PM|
|Wednesday||10:00 AM - 08:30 PM|
|Thursday||10:00 AM - 08:30 PM|
|Friday||10:00 AM - 08:30 PM|
|Saturday||09:30 AM - 06:00 PM|
|Sunday||10:00 AM - 06:00 PM|
|Hours may change during the holidays.|
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