For Costco Customer Service please call 1-800-955-2292
For the Costco Corporate Office please call 425-313-8100
Vice President, Financial Planning & Investor Relations
contact us by phone (425) 313 - 8239
Assistant Vice President, Financial Planning & Investor Relations
contact us by phone (425) 313 - 8254
Email: contact us by email [email protected]
Corporate Office999 Lake DriveIssaquah, WA 98027