States With the Largest Increase in Diabetes in a Decade About one in 10 Americans, or 34.2 million people, live with diabetes, according to the Centers for Disease Control and Prevention data through 2018. And one in three people in the country – or 88 million adults -- have prediabetes, which is higher than normal blood sugar level that can turn into diabetes if left untreated. New cases of diabetes have been skyrocketing among young people, and the overall rates of the chronic condition have been on the rise in every state over the last several years. To determine the states with the highest increase in people with diabetes in a decade, 24/7 Tempo reviewed 2011 and 2021 diabetes data from County Health Rankings & Roadmaps, a Robert Wood Johnson Foundation and University of Wisconsin Population Health Institute joint program. The data released in the 2011 and 2021 reports are for years 2008 and 2017, respectively.