County Health Rankings Data Sources April 8, 2014October 6, 20160 The County Health Rankings & Roadmaps program is a collaboration between the Robert Wood Johnson Foundation (link: rwjf.org) and the University of Wisconsin Population Health Institute (link: uwphi.pophealth.wisc.edu). County Health Rankings measure vital health factors, including high school graduation rates, obesity, smoking, unemployment, access to healthy foods, the quality of