The size of Cornubia is approximately 14.9 square kilometres. It has 19 parks covering nearly 7.4% of total area. The population of Cornubia in 2011 was 6,833 people. By 2016 the population was 7,330 showing a population growth of 7.3% in the area during that time. The predominant age group in Cornubia is 40-49 years. Households in Cornubia are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Cornubia work in a professional occupation. In 2011, 83.5% of the homes in Cornubia were owner-occupied compared with 83.8% in 2016. Currently the median sales price of houses in the area is $790,000.