Unemployment Rate in Boulder County, CO was 3.60% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Boulder County, CO reached a record high of 10.10 in June of 2020 and a record low of 1.90 in December of 2000. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Boulder County, CO - last updated from the United States Federal Reserve on May of 2024.