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Costco

Company websitecostco.com
PUBLISHED COMPANY CONTACTTOLL-FREE

Customer Service Number

1-800-774-2678

Membership and warehouse (US)

USMon–Fri 6am–6pm PT; Sat–Sun 8am–5pm PT
GO DIRECTLY TO THE COMPANYCall CostcoAll contact options

Check the department and calling region before making contact. The company handles your enquiry directly.

Company sourceSource reviewed 2026-09-20
Toll-free in the listed region. Mobile airtime and international charges may apply.

An independent reference. Birch Waypoint is not Costco’s customer service team. This number belongs to the company; we do not connect, forward or record calls.

CHOOSE A CHANNEL

Contact routes for Costco

3 listed

Before contacting Costco, decide which part of the purchase or service needs attention. Use a private company channel to discuss the delivery address or payment record. A listed route does not imply immediate availability or a guaranteed outcome.

phone

Membership and warehouse (US)

1-800-774-2678

US · Mon–Fri 6am–6pm PT; Sat–Sun 8am–5pm PT

Company sourceSource reviewed 2026-09-20
phone

Online orders and Costco Logistics deliveries (US)

1-800-955-2292

US · Mon–Fri 5am–8pm PT; Sat–Sun 5am–7pm PT

Company sourceSource reviewed 2026-09-20
MAKE YOUR ENQUIRY COUNT

A few details.
A clearer conversation.

Keep private account information for the company’s secure channel.

  1. 01

    Use a private company channel to discuss the delivery address or payment record.

  2. 02

    For a damaged delivery, retain the packaging until the seller explains its process.

  3. 03

    Obtain the seller’s return instructions before sending an item away.

COMMUNITY PERSPECTIVE

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Sources & corrections

Dates beside individual contacts refer to their source review. An editorial update does not mean every contact has been checked again.

Entry edited 2026-10-26Suggest a correction
  1. costco.com/
  2. customerservice.costco.com/app/answers/answer_view/a_id/8162/~/contact-us
  3. customerservice.costco.com/app/answers/answer_view/a_id/8162