Resident Population in Lonoke County, AR was 76.38900 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Lonoke County, AR reached a record high of 76.38900 in January of 2024 and a record low of 26.24900 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lonoke County, AR - last updated from the United States Federal Reserve on April of 2026.