Resident Population in Cooper County, MO was 16.94700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Cooper County, MO reached a record high of 17.69700 in January of 2016 and a record low of 14.30000 in January of 1975. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cooper County, MO - last updated from the United States Federal Reserve on May of 2024.