DemographicsSwanwater is approximately 48.38 square kilometres. In 2016 the population of Swanwater was 18. The population is 57% male and 43% female. On average the monthly mortgage repayments in Swanwater are $0 to $299. The most common weekly income bracket is $2000 to $2999 per week. Weekly rents in the area are on average $0 to $74.