Your account number is the second set of digits at the bottom of the check
The bottom of a check contains three groups of numbers separated by vertical lines. The first group is your bank's routing number. The second group — usually 10 to 12 digits — is your account number. The third group is the check number itself.
Your account number identifies which specific account at your bank the check is drawn from. If you have multiple accounts (checking, savings, money market), each one has its own account number. The account number stays the same across all your checks from that account.
The account number appears in the same position on every check you order from that account, so you can find it the same way each time you need it.
Key Takeaways
- Your account number is the middle set of digits at the bottom of the check, between the routing number and the check number.
- Account numbers are typically 10 to 12 digits long, though the exact length varies by bank.
- The account number is printed in the same location on every check from the same account.
- You can also find your account number on your bank statement, online banking portal, or by calling your bank.
Reading the three number groups at the bottom of a check
The bottom left corner of a check displays three distinct sections of numbers, each with a specific purpose. From left to right, they are: routing number, account number, and check number.
The routing number (also called the ABA number) identifies which bank or credit union holds your account. It is always nine digits. The account number comes next and is unique to your account at that bank. The check number appears last and is simply a sequential identifier for that particular check.
These numbers are printed in a special magnetic ink called MICR (Magnetic Ink Character Recognition), which allows bank machines to read and process checks automatically. The numbers are also printed in regular ink above the magnetic line so you can read them by eye.
Why you might need to find your account number
You may need your account number when setting up direct deposit for payroll or benefits, arranging automatic bill payments, or providing banking details to a creditor or lender. Some people also need it when transferring money between their own accounts at different banks, or when contacting their bank about a specific transaction.
If you do not have a check available, your account number appears in other places: on your bank statement (usually near the top), in your online banking portal (often under account details or account settings), or on any debit card statements your bank sends. You can also call your bank's customer service line and provide your name and Social Security number to confirm your account number over the phone.
Account numbers vary in length by bank
Most account numbers are between 10 and 12 digits, but the exact length depends on your bank. Some banks use 10-digit account numbers, others use 12. A few regional banks may use different lengths.
The length does not matter for your purposes — you simply copy or write down all the digits in that middle section. If you are entering your account number into a form and it asks for a specific number of digits, check with your bank or your statement to confirm you have the right count. Banks sometimes pad account numbers with leading zeros, so make sure you include any zeros at the beginning.
How to distinguish the account number from the routing number
The routing number always comes first (on the left) and is always exactly nine digits. The account number comes second (in the middle) and is longer — typically 10 to 12 digits. The check number comes last (on the right) and is usually four or five digits.
If you are unsure which is which, look at the length: the nine-digit number is the routing number, the longer middle number is your account number. You can also verify by checking your bank statement, which usually labels both numbers clearly.
Finding your account number if you do not have a check
If you do not have a check in front of you, your bank statement shows your account number near the top of the first page, often labeled as "Account Number" or "Account #". Online banking portals typically display it under account information or account details — look for a menu option like "Account Summary" or "My Accounts".
Your debit card may also have your account number printed on it, though not all banks print it there. If none of these options work, call your bank's customer service number (usually on the back of your debit card or on your statement) and provide your name and Social Security number. A representative can confirm your account number in seconds.
Frequently Asked Questions
Is my account number the same on all my checks?
Yes, if all your checks are drawn from the same account. Each account has one account number that appears on every check from that account. If you have multiple accounts at the same bank, each account has its own unique account number and its own set of checks.
Can someone use my account number to take money from my account?
Your account number alone is not enough to withdraw money or make unauthorized transfers. Banks also require a signature, PIN, or other verification. However, do not share your account number unnecessarily. If you provide it to set up direct deposit or bill pay, make sure you are dealing with a trusted organization.
What if the numbers at the bottom of my check are smudged or unclear?
Contact your bank directly. They can look up your account number using your name and other identifying information. You can also log into your online banking portal or check your most recent statement, which will have your account number printed clearly.
Does the account number on my check match the account number in online banking?
Yes, it should be identical. The account number your bank displays online is the same number printed on your checks. If you see a discrepancy, contact your bank to confirm which number is correct.