Alliant Credit Union

Alliant Credit Union is a not-for-profit financial cooperative, which means that all of our members are also owners.

Our members-first philosophy has always served us well. With over 85 years of history and more than $12 billion in assets, Alliant Credit Union is the largest credit union in Illinois and one of the largest in the nation. Our excellent online, mobile and phone banking services, combined with our full suite of competitive products, make banking simpler for our 500,000 members nationwide.

Alliant Credit Union Customer Service Telephone


Lost or Stolen Card:
Credit Card: 866-444-8529
ATM/Debit Card: 800-328-1935

International Calls:

TTY/TTD: 800-328-1935

Online Banking Login

How to Log In

1. Visit the bank’s website


2. Click Secure Login located to the left part of their page.


3.You will be directed to another page and required to log in with your Username and Password.


How to Enroll

1. Click on the “Secure Login button located on the left part of their page.


2. Once you click on the button, you will be directed to another page and click the Enroll Now.


3. Once you click Enroll Now, you will be directed to another page to fill out all the blank fields with the needed information. Click on “Continue”.


Video For The new Alliant online banking: Transfers


Routing/Wiring Instructions

Alliant Credit Union customers will be required to have a routing number or routing transit number is a 9 digit number that identifies a financial institution in a transaction and the location where your bank account was opened. The most common types of transactions are ACH and wire transfers. You’ll often be asked for your checking account routing number when you’re making a payment online or by phone.

Some banks and financial institutions usually have multiple routing numbers serving different purposes, geographical regions, and branches. Therefore it is important to ensure that you are using the correct routing number before you initiate a money transfer.

A routing number can also be referred to as an RTN, a routing transit number, or an ABA routing number and can be easily be found printed on the bottom of a check or in the online banking portals of the financial institutions.

How to Find Your Routing Numbers on Check

The best way to find the routing number for your Marquette Bank checking, savings, or business account is to look into the lower-left corner of the bank check.

 Routing Number  Swift Number 271081528 Not part of SWIFT network

Branch Locations And Opening Hours

                                     Please click here  for more location.


Routing number