Credit Union History


Firstmark Credit Union (Formerly San Antonio Teachers Credit Union) is a member-owned, locally controlled, not-for-profit financial cooperative. It was chartered in 1932, giving it the honor of being the oldest state-chartered credit union in San Antonio, Texas.

Firstmark Credit Union held its first official Board Meeting on December 7, 1932 and its first annual meeting on January 14, 1933.

The Credit Union was first located at Fox Tech High School until 1947 when it moved to the San Antonio Teachers Council on Adams Street. Those facilities were outgrown in 1966 and the office was moved to 303 South Santa Rosa Street in downtown San Antonio where it remained for fourteen years. Then, in May 1980, the move to the location at 10730 Gulfdale took place. The Credit Union's first branch office opened in July 1986 on the city's south side at 2327 S. W. Military Drive.

In 2013, Firstmark Credit Union acquired Southside Credit Union to develop and strengthen their relationships with members throughout south San Antonio. Firstmark gained 3 additional financial centers branches through the expansion. Additionally, Firstmark acquired St. Joseph’s Credit Union in 2015, expanding Firstmark’s member base and helping the credit union achieve over $1 billion in assets. St. Joseph’s Credit Union was originally chartered in 1933 to support the catholic communities in San Antonio, Del Rio, and Fredericksburg. With both mergers, members of these communities were able to take advantage of the expanded products and services available, technology, and larger ATM network that Firstmark provides.

Today, Firstmark Credit Union serves the financial needs of anyone who:

  • lives, works, or attends school in Bexar County or 19 of its surrounding counties; and their relatives.
  • worships in Bexar County or 9 of its surrounding counties
  • lives or works in Gillespie County

There are several additional ways a non-member can qualify for membership at Firstmark Credit Union. Visit any one of our 16 financial centers to explore other ways you may be eligible. Firstmark Credit Union has operated continuously since 1932 and we have endeavored to serve everyone in our field of membership with prompt, efficient and personal service.

Because of our efforts to provide dependable, courteous service, the Credit Union has established long-term relationships with loyal members who depend on the Credit Union to fulfill their financial needs.

Financial Center Timeline:

Firstmark Credit Union held its first official Board Meeting on December 7, 1932 and its first annual meeting on January 14, 1933.

Year Established  Financial Center  Address
May 1980
10730 Gulfdale St.
July 1989
Culebra 7200 Culebra Road
July 1992
Huebner  8960 Huebner Road
January 1995  Mission Road  1440 S. E. Military Drive
December 1997 Jefferson  122 Donaldson
July 2001  O’Connor
11530 North IH 35
January 2003  Gold Canyon 2023 Gold Canyon
August 2007
8826 Bandera Rd.
Spring 2008  Zarzamora
6927 S. Zarzamora St.
September 2009
DeZavala  12822 IH 10
August 2011
Alamo Ranch
10911 Culebra Rd.
November 2013  Southwest Military 3401 SW Military Drive
December 2013  Potranco  10610 Potranco Road
May 2014
Bitters 2600 North Loop 1604 W
December 2015  Brooklyn  802 Brooklyn
December 2015  Fredericksburg 610 W. Main St.