Resident Population in Madison County, MS was 114.24700 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Madison County, MS reached a record high of 114.24700 in January of 2024 and a record low of 29.73700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Madison County, MS - last updated from the United States Federal Reserve on April of 2026.