Resident Population in Martin County, KY was 10.92800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Martin County, KY reached a record high of 14.34400 in January of 1983 and a record low of 9.37700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Martin County, KY - last updated from the United States Federal Reserve on May of 2024.