Unemployment Rate in Polk County, TN was 3.40% in May of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Polk County, TN reached a record high of 14.30 in March of 2009 and a record low of 2.90 in April of 2024. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Polk County, TN - last updated from the United States Federal Reserve on July of 2026.