DemographicsRiachella is approximately 27.53 square kilometres. In 2016 the population of Riachella was 3. The population is 100% male and 0% female. On average the monthly mortgage repayments in Riachella 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.