Resident Population in Rush County, IN was 16.84700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Rush County, IN reached a record high of 20.80000 in January of 1972 and a record low of 16.60500 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Rush County, IN - last updated from the United States Federal Reserve on May of 2024.