Beaver Dam, IndianaBeaver Dam is an unincorporated community in Franklin Township, Kosciusko County, in the U.S. state of Indiana.HistoryBeaver Dam contained a post office from 1844 until 1901. A beaver dam on the nearby creek caused the name to be selected.DemographicsThe United States Census Bureau delineated Beaver Dam as a census designated place in the 2022 American Community Survey.