New Lebanon, IndianaNew Lebanon is an unincorporated community in Gill Township, Sullivan County, in the U.S. state of Indiana.The community is part of the Terre Haute Metropolitan Statistical Area.HistoryNew Lebanon was founded in 1827, and was named after the biblical Mount Lebanon. A post office was established at New Lebanon in 1840, and remained in operation until it was discontinued in 1966.GeographyNew Lebanon is located at.DemographicsThe United States Census Bureau defined New Lebanon as a census designated place in the 2022 American Community Survey.