Resident Population in Fayette County, KY was 320.15400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Fayette County, KY reached a record high of 323.92200 in January of 2019 and a record low of 174.32300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Fayette County, KY - last updated from the United States Federal Reserve on May of 2024.