Costco Customer Service Phone Number: Membership, Orders, Returns & Refunds

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Need help with a Costco membership, Costco.com order, delivery, return, refund, warehouse issue, Shop Card, pharmacy order, travel booking, warranty question, or account problem? This guide explains how to reach the Costco customer service phone number and how to choose the correct support route.

Costco is a membership-based warehouse retailer offering groceries, household items, electronics, appliances, furniture, pharmacy services, travel, business center orders, online shopping, and Costco services. Because Costco support is divided by department, use the phone numbers and routing below before calling.

Costco Customer Service Phone Numbers and Contact Options

Costco Customer Service Hours

  • Costco.com Online Orders Phone Hours: Monday – Friday, 5 a.m. – 8 p.m. PT; Saturday – Sunday, 5 a.m. – 7 p.m. PT
  • Costco.com Online Orders Chat Hours: Monday – Friday, 5 a.m. – 8 p.m. PT; Saturday – Sunday, 5 a.m. – 7 p.m. PT
  • Membership and Warehouse Phone Hours: Monday – Friday, 6 a.m. – 6 p.m. PT; Saturday – Sunday, 8 a.m. – 5 p.m. PT
  • Membership and Warehouse Chat Hours: Monday – Friday, 6:30 a.m. – 5:30 p.m. PT; Saturday – Sunday, 8 a.m. – 5 p.m. PT
  • Costco Business Center Phone Hours: Monday – Friday, 6 a.m. – 5 p.m. PT
  • Costco Technical and Warranty Services: Monday – Sunday, 5 a.m. – 8 p.m. PT
  • Costco Mail Order Pharmacy: Monday – Friday, 5 a.m. – 7 p.m. PT; Saturday, 9:30 a.m. – 2 p.m. PT
  • Costco Travel: Monday – Friday, 5 a.m. – 7 p.m. PT; Saturday – Sunday, 6 a.m. – 5 p.m. PT

Choose the Correct Costco Support Route

For Costco.com Online Orders and Delivery Problems

Call Costco.com customer service at 1-800-955-2292 if you need help with an online order, delivery appointment, missing package, damaged item, wrong item, Costco Logistics delivery, appliance delivery, furniture delivery, installation issue, return, refund, or order cancellation.

For Membership and Warehouse Questions

Call Costco Member Services at 1-800-774-2678 for membership renewals, membership cancellation, Executive Membership questions, household cards, address changes, warehouse issues, membership refunds, or help finding the right warehouse department.

For Returns, Refunds, and Exchanges

Use Costco customer service for online returns, warehouse return questions, refund status, replacement requests, damaged items, missing parts, or order issues. For warehouse purchases, the membership counter at your local Costco may be the fastest option.

For Technical and Warranty Support

Call Costco Technical and Warranty Services at 1-866-861-0450 for technical help with eligible electronics, appliances, TVs, computers, and covered products. Have your item number, serial number, order number, warranty details, and receipt ready.

For Costco Mail Order Pharmacy

Call Costco Mail Order Pharmacy at 1-800-607-6861 if you need help with prescription orders, refills, medication delivery, pharmacy account questions, or mail order pharmacy support.

For Costco Travel

Call Costco Travel at 1-877-849-2730 for vacation packages, rental cars, cruises, hotels, travel credits, booking changes, cancellations, and travel support.

For Costco Business Center Orders

Call Costco Business Center order support at 1-800-788-9968 for business delivery orders, Business Center availability, account questions, and commercial order support.

For Costco Anywhere Visa by Citi

Costco Anywhere Visa cards are serviced by Citi. For consumer cards, call 1-855-378-6467. For business cards, call 1-855-378-6468. Use Citi for card payments, billing, credit card statements, rewards, replacement cards, and card account questions.

Information To Have Ready Before Contacting Costco

  • Your Costco membership number
  • The email address on your Costco.com account
  • Your Costco.com order number
  • Tracking number or delivery appointment details
  • Item number, product name, model number, or serial number
  • Photos of damaged, wrong, missing, or defective items
  • Warehouse location if the issue happened in store
  • Receipt, return confirmation, or refund confirmation
  • Shop Card number, if relevant
  • Prescription number for pharmacy questions
  • Travel booking number for Costco Travel questions
  • Payment date, order total, and last four digits of the payment card used
  • Prior case numbers, chat transcripts, or emails from Costco

Common Reasons Customers Contact Costco

  • Costco membership questions
  • Executive Membership questions
  • Membership cancellation or refund
  • Costco.com order status
  • Delivery or installation problems
  • Missing or damaged online orders
  • Wrong item received
  • Returns and refunds
  • Appliance delivery issues
  • Furniture or large-item delivery problems
  • Technical and warranty support
  • Shop Card activation or balance questions
  • Costco Anywhere Visa questions
  • Pharmacy order questions
  • Costco Travel booking support
  • Business Center order support
  • Unrecognized Costco charges

Costco Online Order and Delivery Help

If your Costco.com order is delayed, damaged, missing, or marked delivered but not received, check your order status first. Some orders ship in multiple packages or use separate delivery scheduling through Costco Logistics.

For online order problems, call 1-800-955-2292. For large-item deliveries, have your delivery date, appointment window, item number, order number, photos, and any delivery notes ready.

Costco Membership Help

Costco membership questions can include renewals, auto renewal, Executive Membership, membership cards, household cards, Business Memberships, address updates, membership cancellation, and membership refunds. Call 1-800-774-2678 or visit the membership counter at your local Costco warehouse.

If your issue involves a specific warehouse department, such as pharmacy, optical, tire center, food court, hearing aid center, or membership desk, find your local warehouse and call the warehouse directly.

Costco Returns and Refund Help

Costco is known for a broad return policy, but some items have exceptions, limits, warranty rules, or category-specific return windows. Before returning an item, check whether it was purchased online or in a warehouse and whether the item requires a special return process.

For Costco.com returns, start through your online account or call 1-800-955-2292. For warehouse purchases, the local membership counter may be the best route. Keep receipts, order confirmations, return labels, tracking numbers, and photos of product issues.

Costco Shop Card and Gift Card Help

If you need to activate a Costco Shop Card purchased on Costco.com, call 1-866-781-1014. If you have a Shop Card balance issue, missing Shop Card, promotional Shop Card question, or suspected Shop Card fraud, use Costco customer service and keep the card number, purchase receipt, and related emails available.

Costco Scam and Fraud Warnings

Be cautious with calls, texts, emails, social media messages, fake ads, or websites claiming to be from Costco. Costco has warned customers about known scams involving fake membership notices, fake gift card offers, fake surveys, fake rewards, fake delivery messages, and calls spoofing Costco phone numbers.

Watch for these warning signs:

  • A message asks for your Costco password, full card number, or verification code
  • A caller claims to be Costco and says an account was opened in your name in another country
  • A fake message says you won a Costco gift card but must pay a fee first
  • A survey or reward message asks for personal or payment information
  • A fake delivery message asks you to click an unfamiliar link
  • A website looks like Costco but uses a misspelled or unfamiliar domain
  • A caller spoofs Costco’s membership, ecommerce, or corporate phone number

If you suspect fraud, go directly to Costco.com or call a verified Costco customer service phone number. If payment information was exposed, contact your bank or card issuer right away.

How To Escalate a Costco Customer Service Issue

If your first contact with Costco does not resolve the issue, take these steps:

  1. Save your order confirmation, receipt, delivery confirmation, and return confirmation.
  2. Write down the date, time, department, and phone number you used.
  3. Ask for a case number, reference number, or written confirmation.
  4. For delivery problems, keep photos, tracking details, and delivery appointment notes.
  5. For damaged items, take photos of the item, packaging, shipping label, and damage.
  6. For membership issues, keep renewal, auto-renewal, or cancellation confirmations.
  7. For Shop Card issues, keep the card number, activation details, and purchase receipt.
  8. For Costco Anywhere Visa questions, contact Citi using the correct card support number.
  9. If the issue involves a local warehouse, ask for the warehouse manager or membership desk.
  10. Leave a factual review on CustomerServiceNumbers.com to help other Costco members understand your experience.

Costco Customer Service Reviews and Complaints

CustomerServiceNumbers.com currently shows 1 live review for Costco with a 3.0 out of 5 rating. Because the live CSN review set is limited to one older review and does not provide enough current customer-service detail, there is not enough recent CSN feedback to summarize a Costco customer-service trend.

If you have contacted Costco support, your review can help other members understand what to expect when calling the Costco customer service phone number or using chat for membership, online orders, delivery, returns, refunds, pharmacy, travel, warranty, Shop Card, or account support.

Costco FAQ

What is the Costco customer service phone number?

For Costco.com online orders and Costco Logistics deliveries, call 1-800-955-2292. For Costco membership and warehouse support, call 1-800-774-2678.

What is the Costco membership customer service phone number?

The Costco membership customer service phone number is 1-800-774-2678. Use this number for membership renewals, membership changes, cancellations, household cards, and warehouse support.

What is the Costco.com online order phone number?

The Costco.com online order support number is 1-800-955-2292. Use this number for Costco.com orders, delivery issues, Costco Logistics, returns, refunds, and online order problems.

How do I contact Costco Technical and Warranty Services?

Call Costco Technical and Warranty Services at 1-866-861-0450 for technical help and warranty support on eligible products.

What is the Costco Mail Order Pharmacy phone number?

The Costco Mail Order Pharmacy phone number is 1-800-607-6861.

What is the Costco Travel customer service number?

The Costco Travel customer service number is 1-877-849-2730.

How do I contact Costco Anywhere Visa by Citi?

For Costco Anywhere Visa consumer cards, call Citi at 1-855-378-6467. For Costco Anywhere Visa business cards, call 1-855-378-6468.

What is Costco’s corporate office phone number?

Costco’s corporate office phone number is 1-425-313-8100. The corporate office address is Costco Wholesale Corporation, 999 Lake Drive, Issaquah, WA 98027.

Does CustomerServiceNumbers.com provide Costco support?

No. CustomerServiceNumbers.com is not affiliated with Costco and cannot access your membership, process refunds, replace orders, schedule deliveries, activate Shop Cards, manage pharmacy orders, or resolve travel bookings. This page provides contact guidance, issue-routing help, and a place to share reviews.

Related Customer Service Resources

Why Trust CustomerServiceNumbers.com?

CustomerServiceNumbers.com has helped consumers find customer service phone number information, complaint resources, and company support details since 2004. CSN is a consumer-help resource that organizes contact information, review sections, issue-routing guidance, and practical tips for reaching the right support department.

For wholesale retailers like Costco, CSN focuses on common customer issues such as memberships, online orders, delivery problems, returns, refunds, Shop Cards, warranty support, pharmacy questions, travel bookings, scam warnings, and customer-service experiences shared by real users.

Share Your Costco Customer Service Experience

Have you contacted Costco about a membership, Costco.com order, delivery problem, refund, return, Shop Card, warranty claim, pharmacy order, travel booking, warehouse issue, or Costco Anywhere Visa question? Share your review below. Include the support route you used, what happened, and whether the issue was resolved.

Please do not post private information such as your full membership number, address, payment card number, Shop Card number, prescription details, travel booking number, order confirmation email, password, or personal contact information.

Disclaimer

CustomerServiceNumbers.com is not affiliated with Costco Wholesale Corporation, Costco.com, Costco Travel, Costco Pharmacy, or Citi. This page is for informational, review, and complaint purposes only. Support options, phone numbers, hours, return policies, refund rules, delivery timelines, membership terms, warranty policies, travel rules, pharmacy policies, and company information can change. For account-specific help, orders, memberships, refunds, pharmacy, travel, warranties, or payment issues, contact Costco directly through its official website, warehouse, app, chat, or verified customer service phone number.

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Costco Review

March 26, 2014

I have been reading blogs by people who believe in America to the point that they will no longer shop at Costco. Then there are those who shop at Costco in spite of Costco having been exposed as supporters of the “progressive” left wing socialists. I cannot understand the logic of a person that will sell their souls for the price of a months supply of hamburger. Our forefathers fought and died in wars too horrible to imagine. They sacrificed beyond our imagination for the free enterprise, free competition way of life that Americans have enjoyed for two centuries. And today the ungrateful, selfish, superficial people that do not deserve to be called Americans shop where they can get the “best buy” for the money. Or worse, where they see what they perceive as the “cleanest store” regardless of the donations to the pre-communist, socialist Democrat supporting radicals. These people do not deserve to live in America.

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Dewey

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