Unemployment Rate in Dewey County, SD was 4.20% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Dewey County, SD reached a record high of 26.80 in July of 1998 and a record low of 3.00 in May of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Dewey County, SD - last updated from the United States Federal Reserve on May of 2024.