Stillwell, IndianaStillwell is an unincorporated community in LaPorte County, Indiana|Pleasant Township], LaPorte [County, Indiana|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].