DemographicsYargullen is approximately 28.66 square kilometres. In 2016 the population of Yargullen was 25. The population is 55% male and 45% female. On average the monthly mortgage repayments in Yargullen are $0 to $299. The most common weekly income bracket is $400 to $499 per week. Weekly rents in the area are on average $0 to $74.