DemographicsGouldsville is approximately 5.33 square kilometres. In 2016 the population of Gouldsville was 13. The population is 30% male and 70% female. On average the monthly mortgage repayments in Gouldsville 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.