What Is a Routing Number? A routing number is a string of nine digits intended to identify a financial institution during a transaction. You may also hear routing numbers referred to as ABA numbers.

When wading into the world of banking, it’s easy to wonder if credit cards have routing numbers. After all, other accounts have routing numbers and your credit card has a 16-digit number slapped on it ...

No, credit cards do not have routing numbers. Routing numbers are used by banks and credit unions to process transactions from checking and savings accounts. Credit cards operate differently, using a ...