Firstmark Credit Union
P.O. Box 701650
San Antonio, TX 78270-1650
Lobby Hours
Mon-Fri 9:00 am - 5:15 pm
Drive-Thru Hours
Mon - Fri 8:00 am - 6:00 pm
Sat 9:00 am - 2:00 pm

Reach Out
Main Number
210.342.8484 Toll Free 800.683.1211
Mon - Fri 8:30 am - 5:30 pm
Loan Application Line
210.442.0199
Mon - Fri 8:30 am - 5:30 pm
Sat 8:30 am - 4:30 pm
Member Care Center
210.442.0100
Mon - Fri 7:00 am - 7:00 pm
Sat 8:30 am - 4:30 pm
SmartCall 24/7 Automated Teller and Rate Line
210.366.2255 Toll Free 800.683.1211
VISA Security Hotline Report Lost or Stolen Cards 24/7
Platinum & Platinum Rewards 800.449.7728
Signature 855.799.8136
24/7 Security Hotline to Report Lost or Stolen Debit Cards
800.449.7728 800.449.7728

Cancel Debit Cards
Login to online banking at firstmarkcu.org. Click on Menu, go to Services and select “Manage Your Debit Card.” Choose the debit card(s) you wish to cancel, the Cardholders name, reason for canceling then click submit.

TTY/TD
210.404.2039
Visit Us

Please visit one of our locations: Alamo Ranch, Bandera, Bitters, Culebra, Fredericksburg, Gold Canyon, Gulfdale, Huebner, Jefferson, Mission, O'Connor, Potranco or Zarzamora branches.