Resident Population in Newton County, MS was 21.01900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Newton County, MS reached a record high of 22.50200 in January of 2007 and a record low of 18.70000 in January of 1971. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Newton County, MS - last updated from the United States Federal Reserve on May of 2024.