Hawaii's average life expectancy is 80.7 years, which is about 4 years higher than the national average. BTW, the average life expectancy dropped to 76.4 years. The Commonwealth ranked #4(tied with California and neighboring New Hampshire) in the 10 states with the highest life expectancy. Massachusetts residents have an average life expectancy of 79.0. That's almost 10 years less than Hawaii's average life expectancy.