Costco HQ 999 Lake Drive Issaquah, WA98027
I haven't a clue.Thank you Juan De Leon because I surely didn't know that. But I always figured if you called the 1- 800 number on the back of your membership card and speak with a service specialist they will be glad to help you with that information.
Per Google. Issaquah, WA
Seattle Washington, their is also a corporate office in Atlanta
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