Security Service Federal Credit Union (SSFCU) is a federally insured, federally chartered, $8 billion, natural person credit union with more than 925,000 members, operating from 70 service centers in the U.S. states of Texas, Colorado, and Utah. SSFCU is the largest credit union in San Antonio, Texas, 3rd largest in Colorado, and the 8th largest in the United States, with access to more than 5,000 credit union locations nationwide through CU Service Centers shared branching. The routing number for Security Service Federal Credit Union is 314088637.