DemographicsThargomindah is approximately 42.96 square kilometres. In 2016 the population of Thargomindah was 270. The population is 50% male and 50% female. On average the monthly mortgage repayments in Thargomindah are $600 to $799. The most common weekly income bracket is $800 to $999 per week. Weekly rents in the area are on average $100 to $149.