Unemployment Rate in Marion County, SC was 6.90% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Marion County, SC reached a record high of 21.60 in December of 2009 and a record low of 3.20 in September of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Marion County, SC - last updated from the United States Federal Reserve on April of 2026.