Hackleman, IndianaHackleman is a small unincorporated community in central Liberty Township, Grant County, Indiana.HistoryHackleman was named for Pleasant A. Hackleman, a Franklin County-born Union general who was killed during the American Civil War. A post office was established at Hackleman in 1871, and remained in operation until it was discontinued in 1902.GeographyHackleman is located at the intersection of State Road 26 and County Road 400 West.