The size of Doncaster is approximately 8.8 square kilometres. It has 23 parks covering nearly 9.2% of total area. The population of Doncaster in 2011 was 18,359 people. By 2016 the population was 20,966 showing a population growth of 14.2% in the area during that time. The predominant age group in Doncaster is 20-29 years. Households in Doncaster are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Doncaster work in a professional occupation. In 2011, 74.8% of the homes in Doncaster were owner-occupied compared with 68.1% in 2016. Currently the median sales price of houses in the area is $1,496,000.