Metropolitan areas the cities and the suburbs that suround them have grown by 10.8 percent over the last decade. Rural areas only grew by half as much in the same period. In addition, demographic trends show America is becoming more diverse and less racially-segregated. This trend is alongside another shift – the move away from northern central cities such as Detroit and Chicago -towards southern and western metro areas. The WSJ’s interactive map of the top 50 cities is worth exploring. New York and San Francisco have been flat over the decade. Cleveland saw a major decline in population while Colorado Springs has surged.