Barton County was the 86th least healthiest county in Kansas, falling only 15 places above the state’s least healthy county, Woodson, according to the ratings from the sixth-annual County Health Rankings released Wednesday. This was a drop from last year when Barton was 68th. Riley County topped the chart at number one in the study by the Robert Wood Johnson Foundation and the University of Wisconsin Population Health Institute, a release from the Kansas Health Institute said.