Resident Population in Clinton County, IN was 32.73000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Clinton County, IN reached a record high of 34.38800 in January of 2009 and a record low of 30.54700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Clinton County, IN - last updated from the United States Federal Reserve on May of 2024.