The size of Lillico is approximately 4.5 square kilometres. It has 1 park. The population of Lillico in 2011 was 432 people. By 2016 the population was 13 showing a population decline of 97.0% in the area during that time. The predominant age group in Lillico is 50-59 years. Households in Lillico are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Lillico work in a machinery operators and drivers occupation. In 2006, 33.1% of the homes in Lillico were owner-occupied compared with 88.4% in 2011.