Resident Population in Boone County, AR was 38.63600 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Boone County, AR reached a record high of 38.63600 in January of 2024 and a record low of 19.07300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Boone County, AR - last updated from the United States Federal Reserve on April of 2026.