Your account number is the second set of numbers at the bottom of the check
Look at the bottom left of any check you have. You will see three groups of numbers separated by vertical lines or symbols. The first group is your routing number (nine digits). The second group, usually between 10 and 12 digits, is your account number. The third group is the check number itself.
The account number identifies your specific account at your bank. It is unique to you — no one else's account at that bank has the same number. You will use this number whenever you set up direct deposit, arrange automatic payments, or give someone your banking details to send you money.
If you cannot read the numbers clearly because the check is old or worn, your bank can tell you your account number over the phone or through your online banking portal. You can also find it on your bank statements, your debit card, or in your bank's mobile app.
Key Takeaways
- Your account number appears at the bottom of the check as the second group of numbers, usually 10 to 12 digits long.
- The three number groups at the bottom are routing number, account number, and check number — in that order from left to right.
- Your account number is unique to your account and stays the same for as long as you hold that account.
- If you cannot read the numbers on a check, your bank can provide your account number through online banking, a phone call, or your statement.
Why the order matters: routing, then account
Banks use both numbers together to move money correctly. The routing number tells the banking system which bank to go to. The account number tells that bank which account within the bank to deposit or withdraw from. If you reverse them or mix them up, the payment will either fail or go to the wrong place.
This is why forms always ask for both numbers separately — they are not interchangeable. When you write a check, the routing and account numbers at the bottom are what the receiving bank reads to pull money from your account, not the account holder name printed at the top.
Finding your account number without a check
You do not need a physical check to find your account number. Log into your bank's website or app and look for account details or account information. Most banks display your full account number right on the dashboard or in a settings menu. Some banks show only the last four digits for security, but you can usually click to reveal the full number.
Your monthly bank statement also lists your account number at the top or in the account information section. If you have a debit card, the account number may be printed on the back or on your statement. Call your bank's customer service line — they can read your account number to you after confirming your identity.
What to do if you cannot read the numbers clearly
Checks fade, get wet, or become hard to read over time. If the numbers at the bottom are smudged or unclear, do not guess. Using the wrong account number can send money to someone else's account or cause a payment to bounce.
The safest move is to contact your bank directly. You can call the number on the back of your debit card or on your most recent statement. Have your name, address, and the last four digits of your Social Security number ready so the bank can confirm who you are. They will read your routing and account numbers to you clearly.
The difference between your account number and your check number
The check number is the third group of digits at the bottom right of the check. It is much shorter — usually four or five digits. This number is just for your records and the bank's records to track which specific check was used. It changes with every check you write.
Your account number never changes (unless you close the account and open a new one). The check number is only relevant to that one piece of paper. When someone asks for your account number, they do not want the check number — they want the middle group of digits.
Keeping your account number safe
Your account number is sensitive information. Do not share it with anyone you do not trust, and do not post it on social media or in public forums. If you write a check to someone, they will see your account number, which is normal and expected — that is how checks work. But for other situations, only give your account number to your employer (for direct deposit), your bank, or businesses you are paying intentionally.
If you suspect someone has your account number and you did not authorize it, contact your bank right away. They can monitor your account for unauthorized activity and, if needed, close the account and open a new one with a different account number.
Frequently Asked Questions
Is my account number the same at every bank I use?
No. Each bank account has its own unique account number. If you have a checking account and a savings account at the same bank, they have different account numbers. If you have an account at a different bank, that account has a completely different number.
Can someone withdraw money from my account if they have my account number?
Not with the account number alone. They would also need your routing number, and even then, most banks require additional verification before processing a withdrawal. However, do not share your account number carelessly — it is meant only for authorized payments and deposits.
What if I write down my account number wrong?
If you give the wrong account number for direct deposit or a payment, the money will either go to the wrong account or be rejected. The receiving bank will catch the error if the account number does not match the name you provided. Contact the person or company you gave the number to and provide the correct one.
Do I need both the routing number and account number to receive a direct deposit?
Yes. Your employer or the organization sending you money needs both numbers. The routing number directs the money to your bank, and the account number directs it to your specific account within that bank. Without both, the deposit cannot be processed correctly.