Contact us

Member Contact Center

773-462-2000 or 800-328-1935
TDD/TTY: 773-462-2300
24-hours, 7-days-a-week (except Thanksgiving Day and Christmas Day)

Self Service Telephone (SST)

773-462-2100 or 800-482-5328
24-hour account access, 7-days-a-week

Email

For account-specific support and PIN/Password reset requests, please login to Alliant Online Banking and use secure e-mail or contact us at 800 328-1935 (24/7).

Send questions to our Feedback Form. If you wish to learn more about Alliant Credit Union, complete and submit the Request for Information Form.

Mailing Address

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

Overnight Service

Alliant Credit Union
11545 W. Touhy Avenue
Chicago, IL 60666

ATM/Check Card

Lost/Stolen Card 800-328-1935 or 773-462-2000
Mon - Fri, 7am-7pm CT
After 7pm or weekends 866-861-5411
Falcon, Fraud for ATM/Debit Cards 866-395-3394

VISA^® Credit Cards

Account Information 866-444-8529
Lost/Stolen Cards 866-444-8529
VISA Benefit Questions 800-VISA-911
24-hour account access, 7-days-a-week

VISA^® Credit Card Payments

(Via US Mail)
VISA
P.O. Box 60051
City of Industry, CA 91716

(Via Fed Ex)
Alliant Credit Union
Attn: VISA Operations
11545 W. Touhy Ave
Chicago, IL 60666
800-328-1935

Send Written Disputes to:
Alliant Credit Union
Attn: Customer Service
P.O. Box 31112
Tampa, FL 33631-3112

VISA^® Gift Cards

To Purchase Gift Cards 800-328-1935
Gift Card Support 866-466-2362

First Mortgages

Mortgage Hotline 800-365-7003
Mon - Fri, 6am-7pm CT
Sat, 8am-12pm CT

P.O. Box- Deposits/Payments

Alliant Credit Union
P.O. Box 60050
City of Industry, CA 91716-0050

Note: If your mortgage loan coupon shows a different P.O. Box, you must send your payment to that P.O. Box as indicated on the loan coupon.

Note: FedEx and other similar services do not deliver to P.O. Boxes. If you are sending deposits/payments other than by the U.S. Postal Service, you must address them to Alliant Credit Union, 11545 West Touhy Ave., Chicago, IL 60666, 800-328-1935.

Alliant ABA Routing and Transit Number

# 271081528
To arrange Electronic Funds Transfer, supply financial institution or billing company with Credit Union ABA Routing and Transit Number, type of account and your Alliant Credit Union Member Number.