DemographicsClontarf (Toowoomba - Qld) is approximately 62.06 square kilometres. In 2016 the population of Clontarf (Toowoomba - Qld) was 25. The population is 61% male and 39% female. On average the monthly mortgage repayments in Clontarf (Toowoomba - Qld) are $0 to $299. The most common weekly income bracket is $650 to $799 per week. Weekly rents in the area are on average $0 to $74.