Unemployment Rate in Chester County, SC was 5.80% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Chester County, SC reached a record high of 21.90 in January of 2010 and a record low of 2.70 in September of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Chester County, SC - last updated from the United States Federal Reserve on April of 2026.