U.S. Counties Credited with Longest Life Expectancy

Glancing through a new study which pinpoints the top ten places in the United States to live a long life, it occurred to me that each location (for the most part) is near a body of water and full of forests and/or parks. Kind of seems like city dwellers die off sooner, rather than later. Makes a good case for hitting up some nature on the weekends whenever possible.