You can view many banks' nine-digit routing numbers on their websites without having to log in to an account. Alternatively, you can search for your routing number at routingnumber.aba.com by entering the name of your financial institution and its city, state and zip code.
You can also can locate your routing number within your online banking statements or along the bottom of your physical checks. The routing number appears as the first set of numbers printed on the bottom of checks, followed by your 10- to 12-digit account number.
Routing numbers, also known as ABA numbers, were developed by the American Bankers Association to identify the specific financial institution responsible for transactions.