Resident Population in Chester County, SC was 32.32300 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Chester County, SC reached a record high of 34.12900 in January of 2000 and a record low of 29.81100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Chester County, SC - last updated from the United States Federal Reserve on April of 2026.