How to Join Someone's Costco Membership as an Additional Cardholder

Learn how to join a family Costco membership as a household cardholder by adding yourself through the primary member.

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Ask the primary member of the Costco account to add you as an additional cardholder. They can do this by visiting a Costco Membership desk or logging into their account online. Memberships typically include one free household card for someone 18 or older living at the same address.

FAQs & Answers

  1. Can I join someone else's Costco membership? Yes, you can join as an additional cardholder if you live at the same address and are 18 years or older, added by the primary member.
  2. How do I add someone as a household cardholder on Costco? The primary member can add a household cardholder at any Costco Membership desk or through their online account.
  3. Is there a fee for an additional household card at Costco? No, typically one additional household card is included free with the primary membership.

Watch More

For more information on Costco memberships, including benefits and membership types, explore our detailed guides and FAQs to maximize your shopping experience.

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