Resident Population in Putnam County, MO was 4.63800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Putnam County, MO reached a record high of 6.50000 in January of 1978 and a record low of 4.63800 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Putnam County, MO - last updated from the United States Federal Reserve on May of 2024.