At SACU, we’re here for you no matter which way you prefer to contact us. Below, you’ll find important email addresses and phone numbers for specific concerns. For branch or ATM locations, use our online locator to find us.

Member Service Center

The SACU Member Service Center is available to help you Monday - Friday 7 a.m. to 7 p.m., or Saturday 9 a.m. to 3 p.m. If you have questions about SACU after hours, check our Fast FAQ for answers.

Toll Free: 1-800-688-SACU (7228)
In San Antonio: (210) 258-1234
Fax Line: (210) 258-1543

How Can We Improve?

We value our members’ comments, suggestions, and concerns. Email us with questions or comments at

Note: When emailing SACU, never include your account number, sensitive or personal information. 

Bank by Mail

Need to make a deposit or loan payment from outside of San Antonio? No problem. SACU provides bank-by-mail service to its members. Send your deposits and/or payments to:

Attention: Member Service Center/Mail Teller
San Antonio Federal Credit Union
PO Box 1356
San Antonio, TX 78295-1356

Please do not mail cash.  Your transaction will be processed within 24 hours of receipt (excluding weekends and holidays).


Our automated PhoneLink® service allows you to complete common transactions by phone — in English or Spanish.

San Antonio: (210) 734-9121
Houston: (713) 463-SACU (7228)
Toll Free: 1-800-678-SACU (7228)

Loan Inquiries or Service

If you have a loan with SACU, or need help with loan questions, please call our loan specialists Monday - Friday 7 a.m. to 7 p.m., or Saturday 9 a.m. to 3 p.m.

Loan Inquiries by Phone

Toll Free: 1-800-688-SACU (7228)
In San Antonio: 210-258-1306

Loan Applications Only

Toll Free: 866-705-9382 (after business hours)

Note: If you need to report a servicing issue, to file a complaint, or get more information regarding an SACU loan, contact us by mail or email.


ATTENTION: LDS-Service Fulfillment
P.O. Box 1356
San Antonio, TX 78295-1356

Find SACU Near You

Need to visit us in person? Find the closest branch or check out our ATM network.

Membership Matters

Did you know that SACU offers members:

plus popular annual perks like shred day, a cool Spurs calendar, and more? Join Us

Ready to Get Started with SACU?

Everything we do is in the best interest of our members. To become part of our financial cooperative apply for SACU membership today!