NCUA-insured credit union
Firstmark — San Antonio, TX
Credit Union headquartered in San Antonio, Texas.
Source: NCUA call report data, data as of March 31, 2026, fetched September 5, 2026
Headquarters and contact
| Address | P.O. Box 701650 San Antonio, TX 78270 |
| County | Bexar |
| Website | not published in NCUA data |
| Phone | (210) 442-0100 |
NCUA record
| NCUA Charter | 62509 |
| Federal Reserve RSSD ID | 681490 |
| Status | Active |
| Charter type | 2 (STATE) |
| Financials as of | March 31, 2026 |
How to find your Firstmark routing number
NCUA does not publish ABA routing numbers, and many credit unions use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this credit union, the "account details" screen in its online banking, or its official website.
Share one credit line with people you trust. Everyone gets their own limit.
Offices
| Gold Canyon Corporate Office main office San Antonio, TX |
2023 Gold Canyon Rd, 78232 (210) 442-0100 Corporate Office Hours 7:00 am - 7:00 pm M-F, 8:00 am-4:00pm Sat |
| La Vernia Branch La Vernia, TX |
194 S Fm 1346 Ste 101, 78121 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F, Sat 9:00 am - 1:00 pm Drive Thru Services 9:00 am - 5:30 pm M-F, Sat 9:00 am-1:00 pm |
| New Braunfels Branch New Braunfels, TX |
2740 Loop 337, 78130 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F, Sat 9:00 am-1:00 pm Drive Thru Services 9:00 am - 5:30 pm M-F, Sat 9:00 am-1:00 pm |
| Zarzamora Branch San Antonio, TX |
6927 S Zarzamora St, 78224 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F Drive Thru Services 9:00 am - 5:30 pm M-F |
| Mission Branch San Antonio, TX |
1440 Se Military Dr, 78214 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F, Sat 9:00 am-1:00 pm Drive Thru Services 9:00 am - 5:30 pm M-F, Sat 9:00 am-1:00 pm |
| Jefferson Branch San Antonio, TX |
3206 Fredericksburg Rd, 78201 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F, Sat 9:00 am-1:00 pm Drive Thru Services 9:00 am - 5:30 pm M-F, Sat 9:00 am-1:00 pm |
| O'Connor Branch San Antonio, TX |
11530 N Interstate 35, 78233 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F Drive Thru Services 9:00 am - 5:30 pm M-F |
| Alamo Ranch Branch San Antonio, TX |
10911 Culebra Rd, 78253 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F Drive Thru Services 9:00 am - 5:30 pm M-F |
| Bitters Branch San Antonio, TX |
2602 N Loop 1604 W, 78248 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F Drive Thru Services 9:00 am - 5:30 pm M-F |
| Potranco Branch San Antonio, TX |
10610 Potranco Rd, 78251 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F Drive Thru Services 9:00 am - 5:30 pm M-F |
| Legacy Branch San Antonio, TX |
2103 N Loop 1604 E, 78232 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F, Sat 9:00 am-1:00 pm Drive Thru Services 9:00 am - 5:30 pm M-F, Sat 9:00 am-1:00 pm |
| Huebner Branch San Antonio, TX |
8960 Huebner Rd, 78240 (210) 442-0100 Lobby Hours 9:00 am-5:30 pm M-F Drive Thru Services 9:00 am - 5:30 pm M-F |
13 offices in total. Browse them by city through the state pages.
Where Firstmark has offices
Cities with the most Firstmark offices
Other credit unions headquartered in San Antonio
| Security Service | $14.21 billion |
| Credit Human | $4.38 billion |
| Generations Community | $750.44 million |
| Soarion | $560.73 million |
| Synergy | $345.54 million |
| H E B | $218.15 million |
| River City | $153.37 million |
| Southwest Research Center | $86.01 million |
Largest credit unions headquartered elsewhere in Texas
| Randolph-brooks Universal City | $19.19 billion |
| American Airlines Fort Worth | $9.45 billion |
| Texas Dow Employees Houston | $5.10 billion |
| Rally Corpus Christi | $4.77 billion |
| Eecu Fort Worth | $4.76 billion |
| Gecu El Paso | $4.66 billion |
| University Austin | $4.27 billion |
| First Community Houston | $2.96 billion |
Compare before you open an account: today's CD and savings rates, the CD calculator and the savings calculator.
