Resident Population in York County, SC was 298.32000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in York County, SC reached a record high of 298.32000 in January of 2023 and a record low of 85.21600 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in York County, SC - last updated from the United States Federal Reserve on May of 2024.