Firstmark Credit Union is a federally insured, state-chartered credit union headquartered in San Antonio, Texas, chartered in 1932. With approximately $1.3 billion in assets and 89,089 members across 15 branches in Texas, it holds a low-income designation from the NCUA. The credit union was originally founded as San Antonio Teachers Credit Union and serves a broad geographic and occupational field of membership across south-central Texas.
