Stillwell, IndianaStillwell is an unincorporated community in Pleasant Township, LaPorte County, Indiana.HistoryA post office was established at Stillwell in 1870, and remained in operation until it was discontinued in 1963. The community was named for Thomas Stillwell, a pioneer settler.DemographicsThe United States Census Bureau defined Stillwell as a census designated place in the 2022 American Community Survey.