Unemployment Rate in Cook County, IL was 5.20% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Cook County, IL reached a record high of 19.70 in April of 2020 and a record low of 3.20 in November of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Cook County, IL - last updated from the United States Federal Reserve on May of 2024.