There's a difference between having the highest life expectancy, and having the best rate when it comes to premature mortality. Hawaiians may live the longest on average within the USA, but more Minnesotans make it past 75 than in any other American state.
All of those senior Minnesotans must be hardy souls, because winter in the state is difficult to live through. The average temperature in Minnesota is lower than it is anywhere else in the USA all year, every year.