Eby, IndianaEby is an unincorporated community in Hart Township, Warrick County, in the U.S. state of Indiana.HistoryA post office was established at Eby in 1870, and remained in operation until it was discontinued in 1903. According to Ronald L. Baker, the community was probably named for a local resident. A Warrick County soldier named Abraham Eby was killed in the Civil War.GeographyEby is located at.