The size of Cornella is approximately 62.5 square kilometres. The population of Cornella in 2011 was 351 people. By 2016 the population was 25 showing a population decline of 92.9% in the area during that time. The predominant age group in Cornella is 0-9 years. Households in Cornella are primarily couples with children and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Cornella work in a managers occupation. In 2011, 87% of the homes in Cornella were owner-occupied compared with 78.6% in 2016.