Costco.com Customer Service – How to Contact?

We list here the ways to contact Costco.com. Costco.com customer service is available on various channels and platforms.

Customer Service Options:

• Phone Numbers
• Site
• Email Address
• Twitter Account
• Facebook Page
• Online Chat
• Postal Address

Costco.com Customer Service – Phone

Costco.com customer service contact number: 866-861-0450.

Phone support hours: Monday-Sunday: 5am-10pm PT.

Additional phone numbers:

Costco.com Online Orders: 800-955-2292 – Monday-Friday: 5am-8pm PT, Saturday-Sunday: 5am-6pm PT
Membership and Warehouse: 800-774-2678 – Monday-Friday: 6am-6pm PT, Saturday-Sunday: 8am-5pm PT
Costco Business Center Orders: 800-788-9968 – Monday-Friday: 6am-5pm PT
Costco Concierge Services Technical Support: 866-861-0450 – Monday-Sunday: 5am-10pm PT
Costco Home Improvement Installed Products: 844-765-0251 – Monday-Friday: 5am-7pm PT, Saturday-Sunday: 7am-5pm PT
Costco.com Pharmacy: 800-607-6861 – Monday-Friday: 5am-7pm PT, Saturday: 9:30am-2pm PT
Costco Photo Center: 855-620-7579 – Monday-Sunday: 6am-8pm PT
Costco Travel: 877-849-2730 – Monday- Friday: 5am-9pm PT, Saturday-Sunday: 6am-5:30pm PT

Costco.com Customer Service – Website

For customer service and self service options on the Costco.com website: click here.

Costco.com Customer Service – Email

– The company does not provide customer care by email.

Costco.com Customer Service – Twitter

– No customer service on the company’s twitter account.

Costco.com Customer Service – Facebook

Costco.com official Facebook page: Visit.

Costco.com Customer Service – Chat

Use online chat for contacting Costco.com customer support: click here.

Costco.com Customer Service – Address

Contact Costco.com customer service by mail: PO Box 34622, Seattle, WA 98124, USA.