Resident Population in Chickasaw County, MS was 16.86600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Chickasaw County, MS reached a record high of 19.45400 in January of 1999 and a record low of 16.70000 in January of 1971. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Chickasaw County, MS - last updated from the United States Federal Reserve on May of 2024.