DemographicsWollun is approximately 63.98 square kilometres. In 2016 the population of Wollun was 67. The population is 46% male and 54% female. On average the monthly mortgage repayments in Wollun 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.