SD's Hand County among the least diversified counties in the US
Two of the least diverse counties in the United States are in the Northern Plains, according to a study by a computer science Ph.D. candidate at Michigan State University.
Hand County, of South Dakota, is the fourth least diverse county in the nation, with a population composed 99 percent of whites and 1 percent latinos.
Hooker County, of Nebraska, tied for first as the least diverse county, with a 100 percent White population.
Large swathes of the Dakotas, Nebraska, Minnesota, Montana and Wyoming indicated little or no ethnic diversity, according to Randy Olson's research.
Olson found the most diverse counties in Alaska, New York and California. He found two Aleutian areas as the most diverse in the country.