With so many options to save and grow your personal funds, join Firstmark and see why we are one of the best Texas credit unions.

Established in 1932, Firstmark CU calls San Antonio, Texas home with a network of 1 branch and 13 ATMs. Firstmark stewards over $1.2 Billion in assets and proudly serves over 92,500 loyal members.

Firstmark Credit Union is federally insured by the National Credit Union Administration. Copyright © 2026 Firstmark Credit Union.

Firstmark Credit Union - Find branch locations near you. Full listings with hours, contact info, Services, Membership Eligibility, reviews and more. (HQ: San Antonio, TX)

Today, we are known as Firstmark Credit Union, a member-owned, locally controlled not-for-profit financial cooperative. As the oldest state-chartered credit union in San Antonio, Texas, we are proud …

Firstmark Credit Union is a member-owned, locally controlled not-for-profit financial cooperative. Firstmark has over $1 Billion in assets and more than 97,000 members.

Potranco Financial Center 10610 Potranco Road, San Antonio, TX, 78251 Closed 210-442-0100 Book an Appointment Services ATM Coin Machine Financial Center

Firstmark Credit Union San Antonio, TX - Phone, Contact & Hours, Online Banking, Branch Locations, Member Reviews, Rates, Service Status - 8960 Huebner Road

The Firstmark team is always here to help! Get in contact with us today to get your questions answered.

Sign up for a checking account with Firstmark to learn first-hand about how we are an easy credit union to join and build up your future.