Resident Population in Copiah County, MS was 27.66400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Copiah County, MS reached a record high of 29.43600 in January of 2010 and a record low of 24.40000 in January of 1971. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Copiah County, MS - last updated from the United States Federal Reserve on May of 2024.