The median age of the U.S. was as high in this last year as it has ever been. Back in the 1970s, that age was less than 30. Today, it's 38.2, which is up more than a full year from the past decade. So, where are these cities throughout the country that have their populations aging ever so gracefully? It turns out that one of the oldest throughout the United States is right here in the Berkshires.