DemographicsLonnavale is approximately 208.6 square kilometres. In 2016 the population of Lonnavale was 92. The population is 49% male and 51% female. On average the monthly mortgage repayments in Lonnavale are $800 to $999. The most common weekly income bracket is $400 to $499 per week. Weekly rents in the area are on average $0 to $74.