DemographicsNorval is approximately 26.19 square kilometres. In 2016 the population of Norval was 38. The population is 45% male and 55% female. On average the monthly mortgage repayments in Norval are $1000 to $1399. The most common weekly income bracket is $500 to $649 per week. Weekly rents in the area are on average $0 to $74.