In September 2015, the U.S. Census Bureau released a national report on health care coverage. Providing figures from 2014, the report details not only the types of plans people in the nation may be covered by (private or governmental insurance) but also details the population that is uninsured. As shown in the report, for South Dakota, the uninsured population was reported as declining by approximately 1.5%, or from approximately 93,000 to 82,000 people between 2013 to 2014 (p. 20). As the report clarifies, the data comes from the Current Population Survey Annual Social and Economic supplements.
South Dakota State University
Killsahundred, Mary, "Health Care Coverage in South Dakota Counties" (2015). Census Data Center News Releases. 5.