What is the purpose of routing numbers?
Mia Phillips
Updated on March 23, 2026
A routing number is a nine-digit code used to identify a financial institution in the United States. Banks use routing numbers to direct the exchange of funds to and from one another. You can typically find the routing number on the bottom left corner of most personal checks.
What does a bank routing number tell you?
Your routing number identifies the location where your account was opened. You’ll often be asked for your checking account routing number when you’re making a payment online or by phone. It’s also referred to as an RTN, a routing transit number or an ABA routing number.
Is a routing number unique to you?
Developed by the ABA, each routing number is publicly known and unique to one financial institution. However, one bank or credit union may have multiple routing numbers that are specific to different locations and various tasks that are being completed.
Is it bad to give someone your bank routing number?
Yes, it is *safe*, however, it isn’t *secure*, but that’s okay, because the system doesn’t need it to be. Your Account and Routing Number are fairly public information – it’s printed on every check you have. It’s very easy, nearly trivial, for someone to acquire the information.
Can I use any routing number from my bank?
You can use either number. Note for California customers: If your account has check-writing capabilities and you opened the account in Southern California, you may see a different routing number on your checks than the number displayed above. You can use either number.
Can I transfer money with routing and account number?
You can send money directly to a recipient’s account if you know his routing number and account number. The method of direct money transfer can vary depending on whether you are sending it to a bank in the same network or a different one. Note!! Bank to bank money transfers can take up to 4 days to complete.
What is the routing number for a bank?
Your bank routing number is a 9-digit code used to identify a financial institution in a transaction. It’s based on the location of the bank where your account was opened.
What’s the difference between Iban and routing number?
Unlike routing numbers, these codes are used for international payments. IBANs are international bank account numbers that identify the country, financial institution, and individual bank accounts. They’re mainly issued by banks in the Eurozone, but other countries are starting to adopt them as well.
Where can I Find my Union Bank routing number?
Your bank routing number is a 9-digit code used to identify a financial institution in a transaction. It’s based on the location of the bank where your account was opened. It is also referred to as an RTN, a routing transit number or an ABA routing number and can be easily be found printed on the bottom left side of your check.
Where is the ABA routing number on a check?
The ABA Check Routing Number is on the bottom left hand side of any check issued by THE BANCORP BANK. In some cases, the order of the checking account number and check serial number is reversed.