Where to find your account number on paper and online
Your checking account number is printed on the bottom left of every check you write — it's the middle set of numbers between the routing number on the left and the check number on the right. If you have checks on hand, that's the fastest way to find it. If you don't have checks or prefer not to use them, your bank's website or mobile app will show your account number in seconds, usually on the main account dashboard or under account details.
You can also call your bank's customer service line or visit a branch in person. Have your ID ready — most banks will verify your identity before reading the number aloud or printing it for you. The phone number is on your debit card, on statements, or on your bank's website.
Key Takeaways
- Your checking account number appears on the bottom left of your checks, between the routing number and the check number.
- Log into your bank's website or mobile app to see your account number on the account dashboard or in account details.
- Call your bank's customer service line or visit a branch with your ID to have them provide your account number.
- If you've lost access to your account, your bank can verify your identity through Social Security number, date of birth, and recent transaction history.
Checking your online banking portal
Most banks display your account number prominently when you log in. Look for a section labeled "Account Details," "Account Information," or "My Accounts" — the exact name varies by bank. The account number is usually shown in full, though some banks mask part of it for security on shared devices.
If you can't find it on the main dashboard, check under settings or account management. Some banks hide it one click deeper. If you're using your bank's mobile app, the process is the same: log in and look for account details. The app version is often faster because it's designed for quick reference.
Reading the numbers on a check
The bottom of a check contains three separate numbers in this order: routing number (left), account number (middle), and check number (right). The account number is typically 10 to 12 digits long, though this varies by bank. It's printed in magnetic ink so it can be read by machines at processing centers.
If you have an old check from years ago, the account number on it is still valid — banks don't change your account number unless you close and reopen the account. Even if the check is from a decade back, the number printed on it will work for direct deposits, wire transfers, and other transactions that require your account number.
Contacting your bank by phone or in person
Call the number on the back of your debit card or the customer service line listed on your bank's website. Have your Social Security number, date of birth, and a recent transaction amount ready so the bank can verify you're the account holder. Once verified, they'll read your account number aloud or email it to you.
If you prefer to handle it face-to-face, bring your ID to any branch of your bank. A teller can print your account number on a slip of paper in under a minute. This is also the fastest option if you've forgotten your online banking password or don't have access to your debit card.
What to do if you can't access your account
If you've forgotten your online banking password, use the "Forgot Password" link on your bank's website to reset it. You'll usually be asked to verify your identity through email or a code sent to your phone. Once you reset the password, you can log in and find your account number immediately.
If you've lost your debit card and don't have checks, call your bank's main line. They can look up your account using your Social Security number and date of birth, then provide your account number over the phone. Some banks will also mail you a new debit card with your account number printed on it, though this takes five to ten business days.
Account number vs. routing number
Your account number identifies your specific account at your bank. Your routing number identifies the bank itself. Both appear on checks, but they serve different purposes. When you set up direct deposit or a wire transfer, you need both numbers — the routing number tells the sending bank where to send the money, and the account number tells that bank which account to deposit it into.
If you're unsure which number is which on a check, remember the order: routing number (left), account number (middle), check number (right). Your bank's website will also list both numbers together in your account details, usually labeled clearly so there's no confusion.
Frequently Asked Questions
Is my account number the same as my debit card number?
No. Your debit card number is different from your account number. The account number is what you use for direct deposits and wire transfers. Your debit card number is what you use to make purchases and withdraw cash. You can find your account number on checks or in your online banking portal.
Can I use an old check to find my account number?
Yes. Your account number doesn't change unless you close and reopen your account. A check from five years ago will have the same account number as a check you write today. The routing number may have changed if your bank merged with another bank, but the account number stays the same.
What if my bank doesn't have a mobile app?
Log into your bank's website on a computer or phone browser instead. The account number will be in the same place — usually on the main dashboard or under account details. If you can't find it online, call the customer service number on your bank statement or debit card.
Do I need to memorize my account number?
No. Write it down and store it somewhere safe, or save it in a password manager. You only need to provide it when setting up direct deposit, making a wire transfer, or giving payment information to a business. You don't need to memorize it for everyday banking.