Our Population Center is Moving
The mean centre of US population is “the point at which an imaginary, flat, weightless and rigid map of the US would balance perfectly if weights of identical value were placed on it so that each weight represented the location of one person on the date of the census”, in the definition of the US Census Bureau itself.

Boy I am glad you are back from your hiatus. My blog post quantity and quality decreased significantly while you were offline. Thanks!
Did they take into account obesity rates for various parts of the country?
Just kidding