How to Find Your ACH Routing Number at a Credit Union

ACH routing numbers at credit unions start with 0, 1, 2, or 3, and you can find yours on a check, your online banking portal, or by calling the credit union directly

An ACH routing number is a nine-digit code that identifies your financial institution for electronic transfers — direct deposits, bill payments, and money transfers between accounts. Credit unions use the same ACH system as banks, but their routing numbers follow a specific pattern. The first digit of a credit union's ACH routing number is always 0, 1, 2, or 3, which distinguishes them from most bank routing numbers.

You need this number when you set up direct deposit with an employer, arrange automatic bill payments, or transfer money to another account. The routing number tells the ACH network which credit union to pull the money from or send it to. It is different from your account number, which identifies your specific account within that credit union.

Key Takeaways

Credit union ACH routing numbers always begin with 0, 1, 2, or 3 and are nine digits long.
You can find your routing number on the bottom left of a personal check, in your credit union's online banking system, or by calling member services.
The routing number is tied to your credit union and branch, not to your individual account.
If you switch credit unions, your routing number changes because it identifies the institution, not the account holder.

Where to Find Your Credit Union's ACH Routing Number

The easiest place to look is the bottom left corner of a personal check. The first nine digits printed there are your routing number. If you do not have checks or prefer not to use them, log into your credit union's online banking portal — most display the routing number in the account details or settings section, sometimes labeled "bank information" or "transfer details."

You can also call your credit union's member services line and ask for the ACH routing number. Have your account number ready when you call. Some credit unions list the routing number on their website under a "routing information" or "banking details" page, though you may need to search for it rather than find it on the homepage.

Why Credit Union Routing Numbers Start With 0, 1, 2, or 3

The first digit of a routing number is assigned by the Federal Reserve and indicates the type of institution. Credit unions are assigned 0, 1, 2, or 3 as their first digit. Banks typically receive different starting digits. This system helps the ACH network sort transactions to the correct type of financial institution quickly.

The remaining eight digits identify the specific credit union and sometimes the branch. This is why two credit unions will have completely different routing numbers — the digits encode which institution processes the transaction. If your credit union has multiple branches, they may all share the same routing number, or each branch may have its own.

Routing Number vs. Account Number: What Is the Difference

Your routing number identifies the credit union itself. Your account number identifies your specific account within that credit union. When you give someone your routing number and account number together, you are giving them the full address for your account — the institution and the specific account to send money to or pull money from.

For example, if you set up direct deposit, you provide both numbers. The routing number tells the employer's bank which credit union to contact, and the account number tells the credit union which account within that institution should receive the deposit. You can share your routing number publicly — it is not sensitive information — but you should keep your account number private.

What Happens When You Change Credit Unions

If you move your accounts to a different credit union, your routing number changes because you are now at a different institution. You will need to update the new routing number anywhere you have set up automatic payments or direct deposits. This includes your employer's payroll system, any bills you pay automatically, and any services that pull money from your account on a schedule.

The old routing number will no longer work for new transactions, though transactions already in process may still go through. Contact your new credit union to confirm the correct routing number before updating it in all your accounts. Some credit unions provide a transition guide or checklist to help you update this information.

Using Your Routing Number for Different Types of Transfers

You use the same routing number for direct deposits, automatic bill payments, and ACH transfers to other people's accounts. The routing number stays the same regardless of the type of transaction — it always directs the money to your credit union. The difference is in what you do with the routing number and account number combination.

For direct deposit, you give your employer your routing number and account number so they can deposit your paycheck electronically. For bill payments, you give the biller the same information so they can pull the payment from your account on the due date. For peer-to-peer transfers, you provide your routing number and account number to the person sending you money, or you use a service like Zelle or your credit union's own transfer tool, which handles the routing number behind the scenes.

How to Verify You Have the Correct Routing Number

The simplest way to verify is to check multiple sources. If the number on your check matches the number in your online banking portal and the number the credit union gave you over the phone, you have the right one. If they do not match, call member services to clarify — sometimes different branches or different account types have different routing numbers.

You can also use the Federal Reserve's routing number lookup tool on their website, though you will need to know your credit union's name and state to search. Enter the information and confirm the routing number matches what you have. If you are about to set up a large or important transfer, it is worth taking the extra minute to verify.

Frequently Asked Questions

Can I use the same routing number for all my accounts at the same credit union?

Yes. The routing number identifies the credit union, not the individual account. If you have a checking account and a savings account at the same credit union, both use the same routing number. You distinguish between them using your account number.

What if my credit union has multiple branches — do they all have the same routing number?

Usually yes, but not always. Most credit unions assign one routing number to all branches. Some larger credit unions assign a different routing number to each branch. Call your branch or check your statement to confirm which applies to you.

Is it safe to share my routing number?

Yes. Your routing number is public information — it is printed on every check you write. You need to share it with your employer, billers, and anyone sending you money. Keep your account number private, but the routing number alone cannot be used to access your account.

What if I enter the wrong routing number when setting up a transfer?

The transfer may fail, or it may go to the wrong institution. If you realize the mistake before the transaction processes, contact your credit union or the service you used to cancel it. If the money has already been sent, the receiving institution may return it, but this can take several business days.

Do credit union routing numbers ever change?

Rarely. A routing number changes only if the credit union merges with another institution, closes, or undergoes a major restructuring. If your credit union changes its routing number, they will notify you and provide the new number. You will then need to update it in all your automatic payments and direct deposits.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.