The size of Cobblebank is approximately 8.7 square kilometres. It has 1 park covering nearly 1.2% of total area. The population of Cobblebank in 2011 was 8,916 people. By 2016 the population was 11,516 showing a population growth of 29.2% in the area during that time. The predominant age group in Cobblebank is 30-39 years. Households in Cobblebank are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Cobblebank work in a trades occupation. In 2011, 65.9% of the homes in Cobblebank were owner-occupied compared with 63.7% in 2016. Currently the median sales price of houses in the area is $567,500.