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We are happy to call Washington state our home. Visit our corporate offices at: 999 Lake Drive Issaquah, WA 98027. Or, write us at our mailing address: Costco Wholesale P.O. Box 34331 Seattle, WA 98124. Finally, feel free to call us at 425-313-8100. We’re available Monday–Friday, 8 a.m.–5 p.m. PT.
For business inquiries or customer service matters, you can contact Costco’s Corporate Office using the following details: 🔍 Phone Number: 1-425-313-8100 📞 Customer Care: 1-800-774-2678 (1-800-774-COSTCO)
Costco Headquarters Phone Number: call 1-425-313-8100 to reach the Costco headquarters and 1-800-774-2678 for members-only customer support services. Email: [email protected] ; you can also use the contact form on the official website for customer care services or questions.
For Costco Customer Service please call 1-800-955-2292. For the Costco Corporate Office please call 425-313-8100
How do I make a complaint to Costco? To file a complaint, you can either call the customer service number, (800) 955-2292 , or use the Chat Us feature on its website . How do I cancel my Costco membership?
Costco policy protects employees from retaliation if complaints are made in good faith. For questions or concerns, contact Human Resources at 1-800-284-4882, option #2, or email.
For Membership and Warehouse related questions, you can call 1-800-774-2678 or contact your local Costco instead. For any issues related to Costco.com orders, you can call 1-800-955-2292. If you are calling for a business, contact the Costco Business Center Customer Service at 1-800-788-9968.