New Marion, IndianaNew Marion is an unincorporated community in Shelby Township, Ripley County, in the U.S. state of Indiana.HistoryNew Marion was laid out in 1832. The community's name most likely honors Francis Marion. A post office was established at New Marion in 1833, and remained in operation until it was discontinued in 1949.DemographicsThe United States Census Bureau defined New Marion as a census designated place in the 2022 American Community Survey.