Resident Population in Pearl River County, MS was 57.97800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Pearl River County, MS reached a record high of 57.97800 in January of 2023 and a record low of 27.80200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Pearl River County, MS - last updated from the United States Federal Reserve on June of 2024.