State Farm rival AETNA is a health insurance company that was founded in 1853 and is based in Hartford, Connecticut. It is one of the largest health insurers in the United States and provides coverage to over 22 million people. Geico is an auto insurance company that was founded in 1936 and is based in Chevy Chase, Maryland. It is the second-largest auto insurer in the United States and provides coverage to over 28 million people.