Credit union · NCUA insured
Firstmark Credit Union
A $1.3B credit union, the 390th largest of 4,329, headquartered in San Antonio, TX, with 89,089 members and 12 branches in Texas. Best rates: CDs 3.85% and savings 0.50% APY.
Firstmark Credit Union Carrot Score
77
Carrot Score
Higher than 43% of U.S. banks and credit unions
#19 of 47 in San Antonio, TX metroHow the score works →
Deposits are federally insured by the NCUA up to $250,000 per depositor.
About Firstmark Credit Union
Firstmark Credit Union is a member-owned financial cooperative chartered in 1932 by ten teachers in San Antonio, Texas.
Formerly known as San Antonio Teachers Credit Union, it later expanded by acquiring Southside Credit Union in 2013 and St. Joseph's Credit Union in 2015.
- Headquarters
- 2023 Gold Canyon Rd, San Antonio, TX 78232-1703
- NCUA charter
- 62509
Membership
Who can join
This may be incomplete or out of date, so check with the credit union before you apply.
Where you live or work
- Individuals who live, work, worship, or attend school in designated Texas counties are eligible for membership.
Employers and groups
- Texas residents outside the designated counties can join through automatic complimentary enrollment with the Texas Consumer Council (TXCC).
Branches
12 branches in Texas
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Texas
12 branches
- La Vernia Branch194 S FM 1346 Ste 101, La Vernia, TX 78121Directions
- New Braunfels Branch2740 Loop 337, New Braunfels, TX 78130Directions
- Alamo Ranch Branch10911 Culebra rd, San Antonio, TX 78253Directions
- Bitters Branch2602 N Loop 1604 W, San Antonio, TX 78248Directions
- Culebra Branch7218 Culebra Rd, San Antonio, TX 78251Directions
- Huebner Branch8960 Huebner Rd, San Antonio, TX 78240Directions
- Jefferson Branch3206 Fredericksburg Rd, San Antonio, TX 78201Directions
- Legacy Branch2103 N Loop 1604 E, San Antonio, TX 78232Directions
- Mission Branch1440 SE Military Dr, San Antonio, TX 78214Directions
- O'Connor Branch11530 N Interstate 35, San Antonio, TX 78233Directions
- Potranco Branch10610 Potranco Rd, San Antonio, TX 78251Directions
- Zarzamora Branch6927 S Zarzamora St, San Antonio, TX 78224Directions
Walk-in offices from the NCUA directory as of March 31, 2026. Directions open Google Maps. A nearby branch doesn’t mean you can join or open an account.
Financial details
| Measure | This credit union | Peers’ middle | Strongest quarter |
|---|---|---|---|
| CapitalNet worth ratio | 9.62% | 10.86% | 12.59% or more |
| Troubled loans60+ days late | 0.70% | 0.70% | 0.46% or less |
| ProfitabilityReturn on assets | 0.71% | 0.82% | 1.16% or more |
| LendingLoans per $100 deposited | $73 | $88 | — |
- CapitalNet worth ratio9.62%Peers’ middle 10.86% · Top 25% 12.59%+
- Troubled loans60+ days late0.70%Peers’ middle 0.70% · Top 25% ≤0.46%
- ProfitabilityReturn on assets0.71%Peers’ middle 0.82% · Top 25% 1.16%+
- LendingLoans per $100 deposited$73Peers’ middle $88
Compared with the 479 credit unions with $1 billion or more in assets. The strongest quarter is what the best 25% of them reach: more capital and profit, fewer troubled loans. Lending has no better end.Troubled loans are loans 60 or more days late.
Regulators’ own ratings of Firstmark Credit Union are confidential. These figures are what it reports to the NCUA each quarter, set beside its peers; they aren’t a rating.