Redstone Federal Credit Union is a federally chartered credit union based in Huntsville, Alabama. RFCU is Alabama's largest credit union and is regulated and insured through the National Credit Union Administration. RFCU operates 24 branches across North Alabama and Central Tennessee. RFCU has over 400,000 members and $4.4 billion USD in assets. RFCU is ranked the 21st largest federal credit union in the United States by assets and the 36th largest credit union in the United States by assets and 17th by membership as of June 2015.