DemographicsLake Wongan is approximately 24.37 square kilometres. In 2016 the population of Lake Wongan was 8. The population is 60% male and 40% female. On average the monthly mortgage repayments in Lake Wongan are $0 to $299. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $0 to $74.