DemographicsStonehenge (Tas.) is approximately 127.18 square kilometres. In 2016 the population of Stonehenge (Tas.) was 7. The population is 57% male and 43% female. On average the monthly mortgage repayments in Stonehenge (Tas.) are $0 to $299. The most common weekly income bracket is $0 to $149 per week. Weekly rents in the area are on average $0 to $74.