Resident Population in Audrain County, MO was 24.39400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Audrain County, MO reached a record high of 26.45800 in January of 1980 and a record low of 23.64200 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Audrain County, MO - last updated from the United States Federal Reserve on May of 2024.