Resident Population in Lafayette County, AR was 6.01500 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Lafayette County, AR reached a record high of 10.40000 in January of 1978 and a record low of 6.01500 in January of 2024. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lafayette County, AR - last updated from the United States Federal Reserve on April of 2026.