Question: What is Citibank Costco Visa Credit Card Phone Number?

Answer:

The phone number for Citibank Costco Visa Credit Card is 1-866-241-8684 for consumer card, and 1-866-242-2926 for the business card.  The Citibank Costco Visa phone number is opened 24 hours a day.

You can also manage the Citibank Costco Visa Credit Card online at citicards.com.

Citibank Costco Visa credit card replaced the American Express Costco card in June 2016.  After June 20, 2016, you can not use American Express Costco card anymore.