Resident Population in Calhoun County, MS was 12.68500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Calhoun County, MS reached a record high of 15.66400 in January of 1980 and a record low of 12.68500 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Calhoun County, MS - last updated from the United States Federal Reserve on May of 2024.