Center of population

The center of population is part of a study of demographics. It can be useful to understand the population for a state or region. The Mean center of U.S. population has been counted for each U.S. Census since 1790. 
The center of population for Bangladesh is close to Dhaka. Ohio's center of population is 30 miles from Columbus. The center of US population is located in southern Missouri. This shows that Representatives from the western states travel far to their jobs at the Capitol.