DemographicsWashpool (Qld) is approximately 19.55 square kilometres. In 2016 the population of Washpool (Qld) was 95. The population is 50% male and 50% female. On average the monthly mortgage repayments in Washpool (Qld) are $3000 to $3999. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $350 to $449.