Resident Population in Berkeley County, SC was 255.21700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Berkeley County, SC reached a record high of 255.21700 in January of 2023 and a record low of 56.19900 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Berkeley County, SC - last updated from the United States Federal Reserve on May of 2024.