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How to Contact Costco Customer Service by Phone and Live Chat

By Lana Kisner | October 31, 2023

Costco is known to have one of the best customer service departments that can be contacted in person, online, or by phone. They also offer live chat support, which is my favorite way to get in touch with them.

If you are wondering about Costco’s customer service number and hours, keep reading because I’ve compiled all this information for you in one place.

What Is Costco’s Customer Service Number?

The main Costco Customer Service number for general questions is 1-800-774-2678, and support is available Monday to Friday from 6 a.m. to 6 p.m. PT and from 8 a.m. to 5 p.m. PT on weekends.

Below are all Costco Customer Service numbers by department:

DepartmentCostco Customer Service Number
Membership and Warehouse1-800-774-2678
Costco Online Orders (
Costco Business Center1-800-788-9968
Costco Pharmacy1-800-607-6861
Costco Travel1-877-849-2730
Costco Photo Center1-855-620-7579
Costco Concierge Services1-866-861-0450
Costco Home Improvement1-844-765-0251
Costco Customer Service Number by Department

For Membership and Warehouse related questions, you can call 1-800-774-2678 or contact your local Costco instead. For any issues related to orders, you can call 1-800-955-2292.

If you are calling for a business, contact the Costco Business Center Customer Service at 1-800-788-9968. Keep in mind they are not available on weekends.

For other specific questions, refer to the chart above to find the right customer service department.

What Are Costco’s Customer Service Hours?

Costco’s Customer Service hours vary by department. I put together the chart below so you can refer to it for each department. Just keep in mind that all hours are Pacific Time.

DepartmentCostco Customer Service Hours
Membership and WarehouseMon-Fri, 6 am to 6 pm PT
Sat-Sun, 8 am to 5 pm PT
Costco Online Orders (, 5 am to 8 pm PT
Sat-Sun, 5 am to 7 pm PT
Costco Business CenterMon-Fri, 6 am to 5 pm PT
Costco PharmacyMon-Fri 5 am to 7 pm PT
Sat-Sun, 9:30 am to 2 pm PT
Costco TravelMon-Fri, 5 am to 9 pm PT
Sat-Sun, 6 am to 5:30 pm PT
Costco Photo CenterMon-Sun, 6 am to 8 pm PT
Costco Concierge ServicesMon-Sun, 5 am to 10 pm PT
Costco Home ImprovementMon-Fri, 5 am to 7 pm PT
Sat-Sun, 7 am to 5 pm PT
Costco Customer Service Hours by Department

Does Costco Offer Live Chat Support?

Costco offers live chat support during customer service hours. This is my preferred way to get in touch with them. Here’s how to contact Costco via live chat:

  1. Go to
  2. Click on “Contact Us” at the bottom of the menu on the left side of the screen, then select “Chat Us.”
  3. You will be redirected to the Live Help webpage, where you will need to fill out the form to contact support.
  4. First, choose the department you’d like to contact. You can choose between Costco Online, Warehouse or Membership, or Costco Business. The department must be open at the time, or else you will not be able to select it.
  5. In the next line, choose your chat subject. Based on the department you chose, topics will vary.
  6. Fill in your first and last name as well as your email address.
  7. If you want to chat about a specific order, enter your order number.
  8. Enter your Costco membership number.
  9. Write a short and descriptive message in the bottom box. Include any details necessary for a support team member to send you a helpful, quick, and accurate reply.
  10. When you have completed the form, click on “Start Chat” at the bottom of the page to connect with a Costco support team member.

For security reasons, Costco’s live chat support cannot process membership fees or credit card transactions.

Can You Contact Costco Customer Service via Email?

Unfortunately, Costco does not offer customer support via email. The best alternative is to contact them using live chat, as I explained in the previous section. There is also an option to leave general feedback on their website and mobile app.

To leave feedback on the website, click on the blue tab on the right-hand side that says “Feedback.” The feedback button can be found at the bottom of the screen if you are using a mobile device.

How to Contact Costco Citi Card Customer Service

Costco Citi Card Customer Service can be contacted directly through Citi Bank. You can call 1-855-378-6467 for consumer cards and 1-855-378-6468 for business cards. In addition, they can be contacted online at

If your Costco Citi Card is not working, it may be because the card has not yet been activated. You can check the status of your card and activate it on Citi’s website. They can also help to troubleshoot any problems that may arise in the process.

About the Author

Lana Kisner is a writer on the team with more than 15 years of experience in the food service industry. In her free time, she enjoys traveling, exploring new restaurants, listening to live music, and hiking with her dog.