DemographicsSwanbrook is approximately 33.96 square kilometres. In 2016 the population of Swanbrook was 10. The population is 71% male and 29% female. On average the monthly mortgage repayments in Swanbrook are $0 to $299. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $0 to $74.