There are a few other ways you can contact Costco Credit Card customer service, too; you can submit an inquiry by mail, or visit a local Citi branch.
Here’s how you can contact Costco Credit Card customer service:
Online:Log in to your citi.com account or open the Citi Mobile App to live chat with a customer service representative.
Phone Number: Call (855) 378-6467. When prompted, enter the last four digits of your Costco Credit Card number. Then, say “customer service” to connect to a customer service representative, or select an option from the menu. Live customer service representatives are available 24 hours a day, 7 days a week.
Mail: If you prefer to contact them via mail, you can do so in the following address:
It’s worth noting that Costco Credit Card customer service is only able to answer inquiries related specifically to your Costco Credit Card account. If you have questions regarding your Costco store account, call the store’s customer service at (800) 774-2678 or log on to the customer service website.
The easiest way you can make a Costco Credit Card payment is either online, or by calling customer service at (855) 378-6467. There are alternative options, too, so you can choose whichever is most convenient. And to help you make that determination, we’ll explain each payment method in more detail below.… read full answer
Here’s how to make a Costco Credit Card payment:
Citi online. Sign into your account on the Citibank website. Click the “Payments” tab, select “Make A Payment,” and choose a payment to use to complete the transaction.
Citi mobile app. Citi’s free Apple and Android apps offer the same features as the Citi website. Once you download the app and sign in (same username and password as the web version), you’ll be able to see and pay your bills.
By phone: You can submit payment through an automated service or request to speak to a customer service representative, by calling (855) 378-6467.
By mail. Once you receive your statement for the month, you can mail your check or money order payment to Citi at:
Citibank / Costco Anywhere Visa
P.O. BOX 78019
Phoenix, AZ 85062-8019
Make sure to postmark it by the day the bill is due. Otherwise, you’ll be marked as late.
If you decide not to use the mail, you’ll have the option of paying your Costco credit card bill with an electronic transfer from a checking account, savings account or prepaid card.
In conclusion, there are several ways to make a Citi Costco Credit Card payment. So just choose whichever method is easiest for you. What you don’t want to do is miss payments, as that can seriously damage your credit score.
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