How to contact Costco? Here are the different ways to get in touch with Costco customer service: Phone, chat, email, contact form, Facebook, Twitter and more.
Customer service on the official facebook page of Costco: click here.
Contact Costco by phone on: 1-800-220-6000.
Customer service hours of operation: 24/7.
The postal mail address of Costco customer service / head office is: Costco Wholesale, P.O. Box 34331, Seattle, WA 98124, USA.
Customers can contact Costco on the company’s official Twitter account: Click here.
Email address of the Costco customer support is: [email protected] .