Resident Population in Carroll County, IN was 20.52500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Carroll County, IN reached a record high of 20.55500 in January of 2022 and a record low of 17.73400 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Carroll County, IN - last updated from the United States Federal Reserve on June of 2024.