Helping you build what’s next.

iStock-1368004438-No-Background-Rounded
YOURSA25 Winner Logo

Proudly voted one of San Antonio’s top credit unions!

  • Earn more on your money
  • Pay less in fees
  • Get real guidance from a local, trusted partner

Limited Time Special Offers

Some holiday cheer for new members:
A $500 Holiday Feast Giveaway

Bring everyone together without taking on the entire holiday bill. Open your first Firstmark consumer checking account between October 26 and December 6, 2026, and enter for a chance to win a $500 H‑E‑B gift card—enough to help serve a complete Holiday Feast for up to 12 guests.*

Why Join Firstmark

Hear From Our Members

Icon-Open-Online
Join Online

Joining is easy. Most people finish in under 10 minutes.

Icon-Open-by-Phone
Join By Phone

Give us a call and will complete your application over the phone.

Icon-Open-in-Person
Join In Person

We’d love to see you, visit a branch we will set you up with an account.

Supporting Education

The Firstmark Foundation is a non-profit, 501(c)(3) public charity focused on giving back to the education community.
Firstmark Credit Union, the Foundation, and Power of the Dollar® members have collectively given:

$145,000

Education Grants
Since ’08

$420,000

High Impact Grants
Since ’21

$345,000

Scholarships
Since ’94

NCUA Insurance Coverage Booklet – Your savings federally insured to at least $250,000 and backed by the full faith and credit of the United States Government.

Let's Get Started

Schedule an Appointment

Choose a location to get started!