About Costco
Costco originated the warehouse club concept more than three decades ago, and they continue to lead the industry in terms of quality, value and convenience. The company is known for carrying top-quality national and regional brands, with 100% satisfaction guaranteed to their members, at prices consistently below other retailers.
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Customer Service Information
Contact Information
(800) 774-2678
Call Support Hours:
M - F: 5:00 AM - 6:00 PM (PST)
Sat.: 8:00 AM - 5:00 PM
Sun.: Closed
Company Address:
P.O. Box 34331
Seattle, WA 98124
Shipping Options
- Est. Delivery Time (Standard): 3 - 5 days
- International shipping available
Return Process
Generally 90 days for refund or credit;
Outstanding areas
- Quick delivery
- Intuitive site design
- Robust product reviews