The Chase routing number is a nine-digit number used to identify the financial institution from which a check was drawn or where transactions need to be processed. For domestic and international wire transfers, the Chase routing number is 021000021. However, its important to note that Chase has multiple routing numbers across the U.S., and the specific routing number for an individual depends on where the account was opened. Customers can find their routing number by checking their checks, bank statements, or by logging into their online banking account.