A routing number is a nine-digit code that identifies which bank or credit union holds your account
Your bank's routing number tells the financial system where to send money. When you set up a direct deposit, pay a bill by check, or receive a wire transfer, that nine-digit code is what directs the money to the right institution. Without it, the payment either goes nowhere or lands in the wrong account.
The routing number is specific to the bank branch or the bank itself, depending on the institution. Some large banks use the same routing number for all their branches nationwide. Others, particularly credit unions and smaller regional banks, may have different routing numbers for different locations. The number never changes for your account — it stays the same as long as you bank there.
You will see the routing number printed on the bottom left of your checks, but you do not need a checkbook to find it. Your bank's website, your online banking portal, customer service phone line, or a visit to a branch will all give you the number in seconds.
Key Takeaways
- A routing number is a nine-digit code printed on the bottom left of checks that identifies your specific bank or credit union.
- The routing number stays the same for your account and is used for direct deposits, bill payments, wire transfers, and ACH transactions.
- You can find your routing number on your checks, through your bank's website, your online banking app, or by calling customer service.
- Routing numbers are public information and sharing one with a trusted payee or employer is safe — it only works with your account number together.
Where the routing number appears and how to read it
On a paper check, the routing number is the first set of nine digits at the bottom left corner. It comes before your account number, which is the longer string of digits in the middle. The third number at the bottom right is the check number itself. This order matters if you are reading a check over the phone or writing down the numbers by hand.
If you do not have checks or prefer not to use them, log into your online banking account. Most banks display the routing number in the account details or settings section. Some banks label it "routing number," while others call it "ABA number" (ABA stands for American Bankers Association, the organization that assigns these codes). Your bank's mobile app usually has this information too, often under account information or settings.
You can also call your bank's customer service line — the number is on your debit card or bank statements — and ask for your routing number. They will give it to you when ready. If you are at a branch in person, any teller can write it down for you.
What routing numbers are used for
Direct deposit is the most common use. Your employer or a government agency uses your routing number and account number together to deposit your paycheck or benefits directly into your account. Without the correct routing number, the deposit fails and bounces back to the sender.
Bill payments through your bank's bill pay service require your routing number if you are paying from a checking account. The bank uses it to route the payment through the ACH (Automated Clearing House) network, which processes most non-wire electronic payments in the United States.
Wire transfers — moving money quickly to another bank — also need the routing number. Wire transfers are faster than ACH payments but cost more, and they require both the routing number and the account number to reach the right destination.
Setting up automatic payments to a creditor, mortgage lender, or utility company requires your routing and account numbers so the company can withdraw the payment on the schedule you set.
Routing numbers are public information — here is why that is safe
Your routing number is not secret. It is printed on every check you write and is publicly available through the Federal Reserve's routing number database. Sharing your routing number with your employer, a government agency, or a trusted company is completely safe.
The routing number alone cannot be used to access your account or move money. A person would need both your routing number and your account number to initiate a transfer. Even with both numbers, most transactions require additional verification — a password, a PIN, or authorization through your bank's app.
What you should protect is your full account number combined with your routing number, and especially your online banking password. Never share those with someone you do not trust or someone who contacted you unexpectedly. Legitimate companies — your bank, your employer, the IRS — will never ask you to confirm your account number or password over email or by phone.
Different routing numbers for different transaction types
Some banks maintain separate routing numbers for wire transfers versus ACH transactions. This is less common than it used to be, but it still happens at certain institutions. If you are setting up a wire transfer and the bank tells you the routing number you have is not correct for that type of transaction, ask the customer service representative for the wire routing number specifically.
Credit unions sometimes have different routing numbers depending on which branch you opened your account at or which region you live in. If you move or switch branches, confirm with your credit union whether your routing number has changed. The safest approach is to check your current statements or log into your account each time you need the number, rather than relying on one you wrote down months ago.
International wire transfers use a different system altogether — the SWIFT code or IBAN (International Bank Account Number) — rather than a routing number. If you are sending money outside the United States, ask your bank for the correct code for that country.
What to do if you cannot find your routing number
Start with your bank's website. Most institutions have a "routing number lookup" tool or a help section that lists routing numbers by state or branch. Type in your bank name and "routing number" into a search engine, and the bank's official page usually appears at the top.
If the website does not help, call the customer service number on the back of your debit card or on your most recent bank statement. Have your account number ready, and the representative will give you the routing number in under a minute. You can also visit a branch in person and ask a teller.
The Federal Reserve maintains a public routing number database at frbservices.org, though it requires you to know your bank's name and state. This is a backup option if your bank's customer service is slow to respond.
Frequently Asked Questions
Can someone steal money from my account if they have my routing number?
No. A routing number alone is not enough to move money. Someone would need your account number as well, and even then most banks require additional verification like a password or a code sent to your phone. Treat your routing number like your address — it is public information, but it is not a key to your account.
Do I need a different routing number for each account I have at the same bank?
No. The routing number identifies the bank, not the individual account. All your checking and savings accounts at the same bank use the same routing number. Your account number is what distinguishes one account from another.
What if I give someone the wrong routing number?
The payment will fail or be rejected. The sending bank or employer will usually contact you to ask for the correct number. If money does go to the wrong bank, contact your bank when ready — they can sometimes trace it and retrieve it, but the process takes time and is not always successful.
Does my routing number change if I move to a different state?
Not if you stay with the same bank. Large national banks use the same routing number across all states. If you switch to a local or regional bank in your new state, you will have a new routing number. Check with your new bank to confirm.
Is the routing number the same as the SWIFT code?
No. A routing number is used for domestic U.S. transfers only. A SWIFT code is used for international wire transfers. If you are sending money outside the United States, ask your bank for the SWIFT code, not the routing number.