DemographicsWallumbilla North is approximately 740.68 square kilometres. In 2016 the population of Wallumbilla North was 147. The population is 54% male and 46% female. On average the monthly mortgage repayments in Wallumbilla North are $0 to $299. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $0 to $74.