For Costco Customer Service please call 1-800-955-2292

For the Costco Corporate Office please call 425-313-8100


Gary Millerchip

Executive Vice President, Chief Financial Officer

Josh Dahmen

Vice President, Financial Planning & Investor Relations



Email: contact us by email investor@costco.com



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Information Technology - Email: contact us by email isinfo@costco.com


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Corporate Office
999 Lake Drive
Issaquah, WA 98027