The size of Lonnavale is approximately 208.3 square kilometres. It has 12 parks covering nearly 0.2% of total area. The population of Lonnavale in 2011 was 164 people. By 2016 the population was 75 showing a population decline of 54.3% in the area during that time. The predominant age group in Lonnavale is 50-59 years. Households in Lonnavale are primarily childless couples and are likely to be repaying $800 - $999 per month on mortgage repayments. In general, people in Lonnavale work in a labourer occupation. In 2011, 81.3% of the homes in Lonnavale were owner-occupied compared with 72.2% in 2016.