Resident Population in Madison County, FL was 18.51900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Madison County, FL reached a record high of 19.25100 in January of 2010 and a record low of 13.48100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Madison County, FL - last updated from the United States Federal Reserve on May of 2024.