Unemployment Rate in Mills County, TX was 3.50% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Mills County, TX reached a record high of 7.10 in July of 2011 and a record low of 1.40 in December of 1999. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Mills County, TX - last updated from the United States Federal Reserve on April of 2026.