Resident Population in Calhoun County, SC was 14.18600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Calhoun County, SC reached a record high of 15.18100 in January of 2001 and a record low of 10.50000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Calhoun County, SC - last updated from the United States Federal Reserve on May of 2024.