Manchester, IndianaManchester is an unincorporated community and census-designated place in Manchester Township, Dearborn County, Indiana. The population was 3,304 as of 2023.HistoryA post office was established at Manchester in 1822, and remained in operation until it was discontinued in 1914. The community was named from Manchester Township.DemographicsThe United States Census Bureau defined Manchester as a census designated place in the 2023 American Community Survey.