Resident Population in Calloway County, KY was 38.28000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Calloway County, KY reached a record high of 39.07300 in January of 2019 and a record low of 27.60000 in January of 1973. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Calloway County, KY - last updated from the United States Federal Reserve on May of 2024.