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.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Costco does not offer email support. In order to provide real-time assistance to our members, we currently offer phone and chat support. Please use our Feedback options to provide us with your comments and suggestions.

Costco Logistics offers In-Home Delivery and In-Home Installation services for select items purchased on Costco.com.

You’ll find the phone numbers and information for each of our Costco Services (for your home and business needs) here. Simply click on the name of the service to visit their website.

Our Costco Technical & Warranty Services representatives are available to assist with technical support and warranty information for many of the products above. You’ll find a list of eligible items here.

For more information on our Costco Travel program, please visit our Costco Travel website at www.costcotravel.com. Costco Travel can also be reached by calling them directly at 1-877-849-2730. Their hours of operation are as follows: Monday - Friday 5 a.m. - 7 p.m. PT Saturday - Sunday 6 a.m. - 5 p.m. PT Further contact information can be found here.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Appliances: Costco offers in-home delivery with basic hookup and haul away for certain items, with some exceptions. **see the product page for any additional appliances services that may or may not be included with your purchase and are dependent on the carrier and installer network as well as state and local code requirements.