Where the numbers sit on your check
Your routing number and account number are printed at the bottom left of every check you write. The routing number comes first — it is nine digits long and identifies your bank or credit union. Your account number follows it — it is typically ten to twelve digits, though the length varies by bank — and identifies your specific account at that institution.
The order matters because banks read them in sequence. If you are looking at the bottom of a check, you will see three groups of numbers separated by colons or special symbols. The first group is the routing number. The second group is your account number. The third group, on the far right, is the check number itself.
Not all checks print these numbers in the same visual style. Some banks use a larger font for the routing number, some use smaller print, and some use a different color. But the position is always the same: left side, bottom edge, in that order.
Key Takeaways
- Your routing number (nine digits) and account number (ten to twelve digits) are printed together at the bottom left of every check.
- The routing number always comes before the account number when reading left to right.
- You can also find both numbers on your bank's website, in your online banking portal, or by calling your bank's customer service line.
- If your checks are damaged or you do not have a check available, your bank statement or debit card may also display the routing number.
Reading the MICR line correctly
The numbers at the bottom of your check are printed in a special format called MICR (Magnetic Ink Character Recognition). This format allows bank machines to read the numbers automatically when checks are processed. The MICR line uses a distinctive font that looks slightly different from regular printed text, which makes it easier for both machines and people to distinguish these numbers from other printed information on the check.
When you look at the MICR line, you will see the routing number first, then the account number, then the check number. Some checks also print these numbers in regular text above or near the MICR line for easier reading. If the MICR line is hard to read because of damage, fading, or poor print quality, the regular-text version is your backup.
Finding your routing number without a check
If you do not have a check in front of you, your bank's website is the fastest place to find your routing number. Log into your online banking account, navigate to account settings or account details, and look for a section labeled "Routing Number," "Bank Information," or "Account Details." Most banks display this information prominently because it is needed so often.
Your bank's customer service phone line can also provide your routing number in under a minute. Have your account number ready when you call, though the representative can usually look it up using your name and address. If you bank with a large national institution, you can often find the routing number on the bank's main website without logging in — search for "[Your Bank Name] routing number" and you will usually find a page listing routing numbers by state or branch.
Your bank statement — whether printed or digital — typically shows your routing number near the top or in the account information section. Some banks print it on debit cards as well, though not all do.
Finding your account number without a check
Your account number appears in your online banking portal under account settings or account summary. It is also printed on every bank statement you receive, usually near the top of the page or in the account details section. If you have a debit card issued by your bank, the account number may be printed on the card itself, though some banks omit it for security reasons.
When you call your bank's customer service line, they can confirm your account number by verifying your identity. This is a standard security step — they will ask for your name, address, and possibly the last four digits of your Social Security number or a recent transaction amount before reading your full account number back to you.
What to do if your check is damaged or faded
If the numbers on your check are hard to read because of water damage, fading, or poor printing, do not guess. Contact your bank directly and ask them to confirm both your routing number and account number. They can verify both in seconds and you will have the correct information without risk of error.
If you need these numbers urgently and cannot reach your bank by phone, log into your online banking account. The routing and account numbers are almost always displayed there, and you can access it at any time. If you do not have online banking set up, you can set it up through your bank's website or app in a few minutes using your account information and a form of identification.
Why the order matters when you use these numbers
Banks process transactions in a specific order: routing number first, then account number. If you reverse them or transpose digits, the payment will either be rejected or sent to the wrong account. When you are setting up direct deposit, making an electronic payment, or sending money to someone else, always double-check that you have entered the routing number first and the account number second.
Some payment systems ask for these numbers in separate fields, which makes the order obvious. Others ask for them together in one field, which is where mistakes happen most often. If you are unsure about the format a particular system wants, look for a help section or call the organization you are sending money to and ask them to confirm the order before you submit.
Frequently Asked Questions
Is the routing number the same for all my checks?
Yes. Your routing number is tied to your bank and branch, not to individual checks. Every check from your account will have the same routing number printed on it. If you move to a different branch or open an account at a different bank, your new checks will have a different routing number.
Can I use the routing number from an old check?
Usually yes, but not always. If you have been with the same bank for years and have not changed branches, the routing number on an old check is still valid. However, if your bank has merged with another bank, closed your branch, or reorganized its routing structure, the old number may no longer work. When in doubt, use the routing number from a recent check or confirm it with your bank.
What if the numbers on my check do not match what my bank tells me?
Contact your bank immediately. A mismatch usually means the check was printed incorrectly, which is rare but does happen. Your bank can issue you new checks with the correct numbers, or they can confirm which number is correct if you need to use the old checks for a pending transaction.
Do I need to memorize my routing and account number?
No. Write them down and keep them in a safe place, or store them in a password-protected note on your phone or computer. You will need them occasionally for direct deposit, wire transfers, or setting up automatic payments, but you do not need to memorize them.