A check routing number is a nine-digit code that identifies the financial institution where an account is held. It is printed on the bottom left corner of checks and is used to ensure that funds are deposited into the correct account.
The routing number is an important piece of information for anyone who writes checks or makes electronic payments. It is also used by banks to process checks and other financial transactions. In the past, routing numbers were assigned to banks based on their physical location. However, this system has since been changed, and routing numbers are now assigned based on a variety of factors.