Harrison Township, Boone County, IndianaHarrison Township is one of twelve townships in Boone County, Indiana. As of the 2010 census, its population was 704 and it contained 288 housing units.GeographyAccording to the 2010 census, the township has a total area of, all land.Unincorporated towns Milledgeville New BrunswickAdjacent townships Center Jackson Perry Middle Township, Hendricks County Union Township, Hendricks CountyMajor highways Indiana State Road 39CemeteriesThe township contains two cemeteries: Mount Union and Poplar Grove.