Resident Population in Pope County, IL was 3.70700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Pope County, IL reached a record high of 4.60700 in January of 2003 and a record low of 3.70700 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Pope County, IL - last updated from the United States Federal Reserve on May of 2024.