DemographicsWieambilla is approximately 264.21 square kilometres. In 2016 the population of Wieambilla was 93. The population is 61% male and 39% female. On average the monthly mortgage repayments in Wieambilla are $0 to $299. The most common weekly income bracket is $150 to $299 per week. Weekly rents in the area are on average $0 to $74.