The size of Lilli Pilli is approximately 1.5 square kilometres. It has 3 parks covering nearly 3.3% of total area. The population of Lilli Pilli in 2011 was 1,280 people. By 2016 the population was 1,382 showing a population growth of 8.0% in the area during that time. The predominant age group in Lilli Pilli is 10-19 years. Households in Lilli Pilli are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Lilli Pilli work in a professional occupation. In 2011, 92% of the homes in Lilli Pilli were owner-occupied compared with 93.3% in 2016. Currently the median sales price of houses in the area is $2,850,000.