The routing number is the first (left-most) set of numbers printed along the bottom of your check. It is always exactly nine digits long. Next to it, moving right, you’ll find your account number, and then the check number. All three are printed in a special magnetic ink that banks use to process checks automatically.
How to Spot It on Your Check
Flip your check over so you’re looking at the front, then look at the bottom edge. You’ll see three groups of numbers printed in a blocky, slightly unusual font. Reading left to right:
- Routing number (9 digits): This identifies your bank. It’s often bracketed by small symbols that look like vertical lines or colons.
- Account number: This identifies your specific account at that bank. The length varies by bank, typically between 8 and 12 digits.
- Check number: This matches the number printed in the upper-right corner of the check. It’s usually 3 or 4 digits.
A quick way to confirm you’re reading the right group: count the digits. If the first cluster has exactly nine, that’s your routing number. There are roughly 22,000 active routing numbers across U.S. banks, and you can verify yours through the American Bankers Association’s online lookup tool if you want to double-check.
When You Need Your Routing Number
You’ll be asked for your routing number whenever you set up direct deposit for a paycheck, link a bank account to a payment app, schedule an automatic bill payment, or initiate an electronic transfer. Employers, the IRS (for tax refund direct deposit), and billers all require both your routing number and account number to move money electronically.
Wire Transfers May Use a Different Number
The routing number on your check works for paper check processing and, at many banks, for ACH transfers (the electronic system behind direct deposits and online bill pay). Wire transfers, however, sometimes use a separate routing number. Some banks use the same number for everything, while others assign a dedicated wire transfer routing number. If you’re sending or receiving a wire, check with your bank to confirm which number to use.
Finding Your Routing Number Without a Check
If you don’t have a paper check handy, there are several other ways to look it up. Log into your bank’s website and look under “account information” or “account summary,” where the routing number is typically listed alongside your account details. Most mobile banking apps show it in the same area, sometimes under settings, account details, or a direct deposit setup screen.
Many banks also publish their routing numbers on their public website, often on FAQ pages or pages about setting up direct deposit. If your bank has multiple routing numbers (large national banks sometimes assign different ones by region), logging into your own account is the most reliable way to find the one tied to your specific account.

