Phone
800-328-1935
International Calls:
773-462-2000

Email
For all general inquiries,
please send us an email.

For account-specific questions, please log in to Alliant Online Banking and use secure e-mail or contact us at 800-328-1935 (24/7).

Mail
Alliant Credit Union
P.O. Box 66945
Chicago, IL 60666-0945