Historical Headquarters Timeline

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.

As of December 31, 1932, Firstmark Credit Union had a total of 40 members. Total assets were $475 and total loans were $300. Firstmark had a total of 5 borrowers.

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.

There are several additional ways a non-member can qualify for membership at Firstmark Credit Union. Visit any one of our 13 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.

Learn how to qualify for membership

Financial Center Timeline

Year Established Financial Center Address
1932-1947 Fox Tech High School 637 N Main Ave.
1947-1966 San Antonio Teachers Council 120 Adams St.
1966-1980 South Santa Rosa 303 S. Santa Rosa St.
May 1980-2021 Gulfdale 10730 Gulfdale St.
July 1986-2008 South 2327 S.W. Military Dr.
July 1989-2021 Culebra 7200 Culebra Rd.
July 1992 Huebner 8960 Huebner Rd.
January 1995 Mission 1440 S.E. Military Dr.
December 1997-2022 Jefferson 122 Donaldson
July 2001 O’Connor 11530 North IH-35
January 2003-2021 Gold Canyon 2023 Gold Canyon
August 2007-2021 Bandera 8826 Bandera Rd.
Spring 2008 Zarzamora 6927 S. Zarzamora St.
September 2009-2019 DeZavala 12822 IH-10
August 2011 Alamo Ranch 10911 Culebra Rd.
December 2013 Potranco 10610 Potranco Rd.
May 2014 Bitters 2600 North Loop 1604 W.
December 2015 Fredericksburg, TX 610 W. Main St., Fredericksburg, TX 78624
April 2021 Legacy 2103 N. Loop 1604 E.
September 2021 Culebra 7218 Culebra Rd.
December 2022 Jefferson 3206 Fredericksburg Rd. Ste. 101
March 2023 La Vernia, TX 194 South FM 1346 Ste. 101, La Vernia, TX 78121
August 2023 New Braunfels, TX 2740 Loop 337, New Braunfels, TX 78132