COMPANY CONTACT RECORD
Reader experiencesCostco
Customer Service Number
Costcocostco.com (opens a new tab)Company website
COMPANY-PUBLISHED CONTACT
Membership and warehouse (US)
1-800-774-2678USMon–Fri 6am–6pm PT; Sat–Sun 8am–5pm PT
View original source (opens a new tab)Source date
Independent contact reference. Hazel Milepost is not Costco’s customer-service team. The number and external routes belong to the named provider. We do not answer, transfer or record calls.
BEFORE YOU GET IN TOUCH
A little context helps.
Costco — an order, a return or a product question. Keep the original confirmation nearby when you choose a contact method. This record brings together the telephone and online destinations documented below; each belongs to the listed business.
- Identify the seller shown on the receipt.
- Name the product and the order date.
- Ask for return instructions before shipping an item.
CONTACT OPTIONS
Choose the right channel.
PHONE
Online orders and Costco Logistics deliveries (US)
· Mon–Fri 5am–8pm PT; Sat–Sun 5am–7pm PT
1-800-955-2292Original source (opens a new tab) · Source date 2026-09-20
website
Official website
Open contact page (opens a new tab)Original source (opens a new tab) · Source date 2026-09-10
READER EXPERIENCES
What was your experience?
Read published contributions or leave a first-hand account of your interaction with Costco.
Loading published reviews…