Unemployment Rate in Nassau County, FL was 4.50% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Nassau County, FL reached a record high of 11.30 in January of 2010 and a record low of 2.30 in December of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Nassau County, FL - last updated from the United States Federal Reserve on April of 2026.