Resident Population in Harrison County, IN was 40.00600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Harrison County, IN reached a record high of 40.55200 in January of 2019 and a record low of 20.42300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Harrison County, IN - last updated from the United States Federal Reserve on May of 2024.