National rankings that gauge the well-being of children show the number of Colorado youngsters living in high-poverty neighborhoods is growing faster than in any other state. Overall, Colorado placed 21st out of 50 states in the 2013 Kids Count Data Book, an annual report by the Annie E. Casey Foundation that examines economic, education, health and family data. The ranking is a bump of one spot from last year, when the state was 22nd in the country. The study cited four areas where the state worsened.