County-level map details diabetes rates; S.D., Miss., N.C. have highest rates at more than 14%

The rate of diabetes increased in 2,992 counties from 2004 to 2012, with only 10 counties seeing a decrease in rates and five more remaining unchanged, Ana Swanson reports for The Washington Post. At this rate, by 2050, one in every three Americans will have diabetes.

Most of the states with the highest rates have large rural populations, led by South Dakota, Mississippi and North Carolina with more than 14 percent of the population having diabetes in 2012, Swanson writes. Alabama, Montana and West Virginia also had some of the highest rates. (The Data Dude map: For an interactive version click here)