Census Bureau Director Robert Groves was out in the tiny village of Plato, Missouri, yesterday to unveil a National Geodetic Survey disc commemorating Plato as the new national center of population.
The Census Bureau calculates the center of population after each census as "the place where an imaginary, flat, weightless and rigid map of the United States would balance perfectly if all residents were of identical weight." The center of population has moved slowly west and south from Kent County, Maryland, in 1790 to Missouri.
The Census Bureau also calculates the center of population for each state. In 2010, the center of population for the 897,934 of us counted in Delaware was northeast of Smyrna, along Route 9.