Contact Us

To help us better serve you, let's start with the reason you're contacting us.

Please do not include personal information (like your account number or social security number). For account specific questions or application status please login to Alliant Online Banking to send us a message or call us at 800-328-1935.

Need help immediately?

We're always available by phone

  800-328-1935

Phone

800-328-1935

Lost or Stolen Card

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

International Calls

773-462-2000

Accessibility

TTY/TTD: 800-328-1935

Bank Routing Number

#271081528

P.O. Box for Deposits/Payments

Alliant Credit Union P.O. Box 2387 Des Plaines, IL, 60017-2387