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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 Credit Card Payments

Alliant Credit Union P.O. Box 1666 Des Plaines, IL, 60017-1666

P.O. Box for Mortgage Loan Payments

Alliant Credit Union P.O. Box 1098 Des Plaines, IL, 60017-1098

P.O. Box for Deposits and Loan Payments

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

Do not use old deposit tickets, loan coupons or mailing labels that indicate an address other than the address listed above. Save time & money - deposit your checks via our mobile app.

We only accept cash deposits via select ATMs. Please use our ATM locator on our mobile app or via Online Banking.