Unemployment Rate in Lake County, CO was 2.90% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Lake County, CO reached a record high of 20.50 in May of 2020 and a record low of 1.70 in December of 2017. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Lake County, CO - last updated from the United States Federal Reserve on April of 2026.