4 ways to locate your member number

Your Costco membership number is located on the back of both your membership card and CIBC Costco Mastercard® . You can also download the Costco app to view your membership number on your digital membership card.

On the back of your membership card. It's a 12-digit number, and you can leave off any preceding 0s. If you have the ...

1. Back of your Costco membership card. the back of Costco membership card highlighting the member number · 2. Back of your Costco Visa® Card by Citi · 3. Costco ...

Gold Star Membership: Any individual whose age is 18 or above and is approved by Costco. 3. A Costco membership card can only be used by the ...

For local members, please enter your Costco membership card number and Taiwan ID number (for foreigners, please enter your Alien Resident ...

For details, please contact the Costco membership counter of the warehouse store or the Costco customer service (0570-200-800). If I downgrade my executive ...

They marked that card as lost, gave me a new membership number which I could use digitally in the app until i could pick up the replacement in ...

In 2024, close to 137 million people had paid for a yearly Costco membership. The number of cardholders has been growing steadily since 2014.