Unemployment Rate in Custer County, SD was 3.40% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Custer County, SD reached a record high of 11.10 in January of 1997 and a record low of 1.30 in July of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Custer County, SD - last updated from the United States Federal Reserve on May of 2024.