In 2014, the United States ranked 41st in the world in life expectancy, with an average American expected to live to age 78. But, like most averages, that doesn't paint the whole picture. Life expectancy is more like Norway's in some parts of the country and more like Kazakhstan's in others.
That's why it's more useful to look at it county by county. Here's how life expectancy in U.S. counties compare to averages around the world.