The American Bankers Association routing number is a nine-digit numerical code used to identify a bank. Banks use ABA routing numbers to process checks and electronic transfers of funds between banks.

This nine-digit number identifies the bank that's associated with the check. The routing number is sometimes called an ABA number -- for the American Bankers Association -- or routing transfer number.

As an alternative to using a paper check to find your routing number, you can find it in your account statement and on your bank’s online banking platform or mobile app. Many banks list the ...

Routing numbers were developed by the American Bankers Association in 1910 for processing checks. They’re also known as ABA routing numbers or routing transit numbers. Today, routing numbers are ...

Institution Identifier (second four numbers): Identifies the specific ABA financial institution. Check Digit (last number): Validates the authenticity of the routing number.

The routing number is a 9-digit code that is unique to your bank. If you’re unsure how to find the routing number, check the bottom left corner of your checks or search your account statement.

The other number is the number assigned to your checking account when you open the account. Here’s a look at how routing and account numbers work and how you can find them on a check.