To review or make changes to your membership information on our website, select Sign In / Register, in the upper right-hand corner of the Costco.com home page. (Keep in mind, you will need to be the Primary Member or Account Manager and verified before you can review or make any membership changes online.)

Choose Account Details in the Account menu. Select Edit next to Sign In Email. Enter your current email address and select Send Verification Code. Enter the verification code sent to your email address, then select Verify Code. Enter your new email address, then select Update. Use your new email address the next time you sign in at Costco.com.

Select Create Account, then enter your e-mail address, a password, and — if you’re a member — the number found on your membership card. If you happen to have a Costco Anywhere Visa® Card by Citi, just look for your membership number on …

Renewing your membership online is as simple as signing in and heading to Renew Membership in your Costco.com Account. To keep things nice and easy, our members likewise have the option to Auto Renew using any Visa® credit card. Please keep in mind that active memberships can only be renewed within 90 days prior to the expiration date.

To sign out of your account, simply select Account near the upper right-hand corner of Costco.com Do I have to create an account to place an order on Costco.com? To place an order on Costco.com, you must first create an account (we do not offer guest checkout as an option).

Unable to Successfully Verify Your Account? Please complete the following steps: Visit the membership counter at your local Costco warehouse or use the Contact Us options on this page. Provide your membership card and photo ID at the membership counter. They will send you an email containing a link valid for 48 hours.

Note: If you have already verified your membership online at Costco.com, you will not be asked to verify your membership when setting up your Costco Mobile App account. *Questions used to confirm your identity and allow you to access your membership information online are provided by a third-party public records service.

It can often take 45-90 days for Costco to receive funds from a reversed dispute after they have been debited from your account. To speed up the process, you can respond to the email notice sent to you and provide us with a dispute closure notice or copy of your statements detailing that you have been rebilled so we may confirm the resolution ...

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Head over to Account Details in your Costco.com Account. Select Edit next to your password. You’ll be ...