Firstmark Credit Union
P.O. Box 701650
San Antonio, TX 78270-1650
Lobby Hours
Mon - Fri 9:00 a.m. - 6:00 p.m.
Sat - Sun Closed
Book an appointment online and avoid the wait! Schedule An Appointment
Drive-Thru Hours
Mon - Fri 9:00 a.m. - 6:00 p.m.
Sat - Sun Closed

Reach Out
Member Care Center
210.442.0100 Toll Free 800.683.1211
Mon - Fri 7:00 am - 7:00 pm
Sat 9:00 am - 4:00 pm
Loan Application Line
210.442.0199
Mon - Fri 7:00 am - 7:00 pm
Sat 9:00 am - 4:00 pm
SmartCall 24/7 Automated Teller and Interest Rate Line
210.366.2255 Toll Free 800.683.1211
Secure Messaging

Our Secure Messaging channel is one of the safest ways to communicate with us. Log into Firstmark Online Banking or Firstmark Mobile Banking to send a secure message.

Credit Card Security Hotline | Report Lost or Stolen Cards 24/7
VISA Platinum & Platinum Rewards 800.449.7728
Debit Cards Security Hotline | Report Lost or Stolen Cards 24/7
800.449.7728

To lock/unlock a card, login to Online Banking. Select your checking account and click “Card Controls.” Choose the debit card you wish to lock or unlock.

Visit Us

Visit one of our twelve friendly San Antonio locations, or our location in Fredericksburg, Texas.