The routing number is the first set of nine digits at the bottom left of your check
The routing number appears in the lower left corner of any check, printed in a special magnetic ink. It is always nine digits long and identifies which bank or credit union issued your account. You do not need to decode anything — the number sits by itself, separated from the account number that comes next.
The routing number stays the same across all your checks from the same account. If you switch banks, your new checks will have a different routing number. The format is always the same: nine digits, nothing else, positioned before your account number at the bottom of the check.
Key Takeaways
- The routing number is the first nine-digit sequence at the bottom left of your check, printed in magnetic ink.
- It identifies your specific bank or credit union and remains the same on every check from that account.
- The account number comes immediately after the routing number and is typically longer than nine digits.
- If you cannot locate a physical check, you can find your routing number through your bank's website, customer service, or the ABA routing number database.
How to spot it among the other numbers on your check
A standard check has three groups of numbers printed at the bottom in magnetic ink. The first group, on the far left, is your routing number — nine digits with no letters. The second group in the middle is your account number, which varies in length depending on your bank. The third group on the right is the check number, which is usually shorter.
The routing number is always positioned first and is always exactly nine digits. It will never contain letters or special characters. If you see a number that does not fit this pattern, it is not the routing number.
What the routing number tells you
The routing number encodes information about your bank's location and Federal Reserve district. The first four digits identify the Federal Reserve routing symbol, the next four identify your specific bank or branch, and the final digit is a check digit used to verify the number is correct. You do not need to understand this breakdown to use the number — you only need to copy it accurately.
Different branches of the same bank may have the same routing number, or they may have different ones depending on how the bank structures its operations. This is why the routing number on your check is the most reliable source for your specific account.
When you need the routing number and where to find it if you do not have a check
You need the routing number when you set up direct deposit, arrange a wire transfer, or authorize an automatic payment from your account. Banks and payment processors ask for it because it tells them exactly where to send or pull money.
If you do not have a check in front of you, your bank's website usually displays your routing number in the account details section. You can also call your bank's customer service line — the number is on your debit card or bank statement — and ask for your routing number. The ABA Routing Number Locator, maintained by the American Bankers Association, lets you search by bank name and state if you need to verify it.
Routing numbers versus account numbers
The routing number and account number are two separate pieces of information that work together. The routing number tells the financial system which bank holds your account. The account number tells that bank which specific account within that bank is yours. You need both to complete most transactions.
On your check, the routing number always comes first, on the left. The account number follows immediately after. If someone asks for your routing number, they do not need your account number at that moment — they are asking for the nine-digit code on the left side only.
Routing numbers for online banks and credit unions
Online banks and credit unions issue routing numbers the same way traditional banks do. If your bank is online-only or credit union-based, your checks will still have a routing number printed at the bottom. If you do not have checks, log into your online account and look for account details or settings — most institutions display the routing number there.
Credit unions often participate in shared branching networks, which means some credit unions may have multiple routing numbers depending on which branch you use. Your statement or account details page will show the routing number tied to your specific account.
Frequently Asked Questions
Can I use someone else's routing number to send them money?
No. The routing number identifies the bank, not the person. You need both the routing number and the account number to send money to someone. Using only a routing number would not direct the payment to the right person.
Is it safe to share my routing number?
Your routing number alone cannot be used to withdraw money from your account. Someone would also need your account number and, for most transactions, additional verification. Routing numbers are printed on checks, which are often visible to others, so they are considered semi-public information. Never share your full account number or routing number together with someone you do not trust.
What if the routing number on my check does not match what my bank's website shows?
Contact your bank directly. This is rare, but it can happen if your account was transferred between branches or if the bank recently changed its routing structure. Your bank can confirm which number is correct for your account.
Do I need the routing number to use my debit card?
No. Your debit card does not require a routing number. You only need the routing number when you are setting up a transfer or payment that goes directly to or from your bank account, not through a card network.