Resident Population in Miller County, AR was 42.41500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Miller County, AR reached a record high of 43.85800 in January of 2015 and a record low of 33.38500 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Miller County, AR - last updated from the United States Federal Reserve on June of 2024.