Argonne Credit Union Address
1350 W. Renwick Rd
Romeoville, IL 60446
Argonne Credit Union Phone Number

Argonne Credit Union of Illinois - Routing Number

Old Routing Number: 271985844
The routing number for Argonne Credit Union in Illinois is used on Argonne Credit Union checks and for direct deposits and wire transfers.

Argonne Credit Union is a banking institution located in Romeoville, IL. The routing number for Argonne Credit Union is 271985844.

How to use the Argonne Credit Union Routing Number

Routing number on sample check

Argonne Credit Union's routing number is the eight or nine-digit number found on the bottom left hand side of Argonne Credit Union checks, next to your checking account number and check number.

In the sample check on the left, the routing number is circled in red. Your checks may have a slightly different layout.

Your routing number is used like a bank's address, to ensure that financial transactions (like checks and direct deposits) get sent to the correct banking institution. You will need to know the Argonne Credit Union Routing Number when setting up direct deposit with your employer, receiving direct-deposit benefits or tax refunds from the U.S. Government, or requesting a direct bank wire payment to your bank account.

Unlike your Argonne Credit Union Bank Account Number, the Argonne Credit Union Routing Number is the same for all Argonne Credit Union accounts. If you have both your checking and savings accounts with Argonne Credit Union, for example, they will both use the same routing number, 271985844.