For example, routing numbers are nine digits long ... If you're looking for a bank account number on a check, you'll find it on the bottom middle of the financial instrument.

The first four numbers in the code represent the Federal Reserve routing symbol. The next four digits are the ABA institution identifier followed by the check digit. What Is an Example of an ABA ...

plus what makes them different from routing numbers. Anatomy of a check A bank account number is one of three important numbers you'll find on the bottom of every check. Here's what each means ...