Hispanics have the longest life expectancy rates in the U.S., a new study found. The Centers for Disease Control and Prevention found that life expectancy rates for Latinos in 2014 were the highest out of any group studied â at 84 for Hispanic women and more than 79 for men. Black Americans were lowest, at about 78 for women about and 72 for men, while for white men it was 76Â½ years and white women lost about five weeks from their predicted lifespan in 2014.