Your Chase customer number is a unique identifier printed on your statement and visible in the Chase mobile app and online account

Your Chase customer number is an eight-digit code that identifies your account within Chase's system. It appears on the front of your monthly statement, usually in the upper right corner. You can also find it by logging into your Chase online account or opening the Chase mobile app — it shows in your account settings or profile section. This number is different from your credit card number itself; it's tied to your entire relationship with Chase, not just one card.

You'll need your customer number when you call Chase customer service, dispute a transaction, or set up certain account features. Having it ready before you call saves time, since the representative can pull up your full account history when ready rather than searching by card number alone.

Key Takeaways

  • Your Chase customer number is an eight-digit code found on your monthly statement, in the top right corner.
  • The same customer number applies to all Chase credit cards you hold under one account, even if you have multiple cards.
  • You can view your customer number in the Chase mobile app under account settings or by logging into Chase.com.
  • Customer service representatives use this number to access your complete account history and process requests faster than using your card number alone.

Where to find it on your statement

Open your most recent Chase credit card statement — either the paper version or the PDF from your email. Look at the top right corner of the first page. Your customer number appears there as an eight-digit number, often labeled "Customer Number" or "Account Number." It's printed in the same section where your statement date and billing period appear.

If you've misplaced your statement, you can request a copy through your Chase online account. Log in, go to your statements section, and read any recent month. The customer number remains the same across all your statements, so any month will show the same eight digits.

Finding it in your Chase online account

Go to Chase.com and sign in with your username and password. Once logged in, look for "Account Settings," "Profile," or "My Accounts" — the exact label varies depending on which Chase product you're viewing. Your customer number typically appears near your account holder name and contact information.

If you use the Chase mobile app, open it and navigate to your account settings or profile section. The customer number is usually displayed prominently alongside other account identifiers. You don't need to dig through menus; it's one of the first pieces of information shown when you access your account details.

How it differs from your card number and routing number

Your credit card number is the 16-digit number on the front of your physical card — that's what you use to make purchases. Your customer number is an eight-digit identifier that represents your entire relationship with Chase. If you have two Chase credit cards, they have different card numbers but the same customer number.

Your routing number is a separate nine-digit code used only for bank transfers and direct deposits; it identifies Chase as your bank, not your specific account. When you call Chase customer service, providing your customer number is faster than reading off your full card number, because the representative can when ready see all accounts linked to you.

When you need to provide your customer number

Call Chase customer service for account questions, billing disputes, or to report fraud — have your customer number ready. If you're setting up automatic payments or linking your Chase account to another service, you may be asked for it. Some third-party financial apps also request it to verify your identity before connecting to your Chase account.

You don't need your customer number to make purchases or use your card at a store or online. Merchants only see your credit card number. The customer number is for internal Chase use and for situations where you're communicating directly with Chase about your account.

What to do if you can't locate it

If you don't have a statement and can't access your online account, call Chase customer service at the number on the back of your card. The representative can verify your identity using your name, address, and card number, then provide your customer number over the phone. This takes a few minutes but is the most direct route if you're locked out of your online account.

You can also visit a Chase branch in person with your ID and card. A banker can look up your customer number when ready. This is useful if you prefer to handle it face-to-face or if you're already at a branch for another reason.

Frequently Asked Questions

Do I have a different customer number for each Chase credit card?

No. If you hold multiple Chase credit cards under the same account, they all share one customer number. Each card has its own card number, but your customer number represents your entire relationship with Chase. If you have a separate Chase checking account, that may have a different customer number because it's a different product line.

Is my customer number the same as my account number?

On a Chase credit card statement, "customer number" and "account number" refer to the same eight-digit code. Chase uses the terms interchangeably. On a Chase checking account, the account number is different — it's the routing number plus your specific account identifier. Always check the label on your statement to be sure which number you're looking at.

Can I use my customer number to make purchases online?

No. Online merchants only accept your 16-digit credit card number, expiration date, and CVV. Your customer number is for Chase internal use only. Never share your customer number with a merchant or on a website — it's not needed and creates unnecessary security risk.

What should I do if I think someone has my customer number?

Contact Chase customer service when ready using the number on the back of your card. A representative can review your account for unauthorized activity and monitor it for fraud. Your customer number alone doesn't let someone make purchases, but combined with other information it could be used to impersonate you when calling Chase.