Resident Population in Polk County, NC was 20.06000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Polk County, NC reached a record high of 20.72300 in January of 2019 and a record low of 11.73500 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Polk County, NC - last updated from the United States Federal Reserve on May of 2024.