Resident Population in McLean County, KY was 9.05400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in McLean County, KY reached a record high of 10.40000 in January of 1978 and a record low of 9.05400 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in McLean County, KY - last updated from the United States Federal Reserve on May of 2024.