Resident Population in Brown County, IN was 15.65300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Brown County, IN reached a record high of 15.65300 in January of 2023 and a record low of 9.05700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Brown County, IN - last updated from the United States Federal Reserve on June of 2024.