The size of Doonside is approximately 6 square kilometres. It has 19 parks covering nearly 16.7% of total area. The population of Doonside in 2011 was 13,086 people. By 2016 the population was 13,445 showing a population growth of 2.7% in the area during that time. The predominant age group in Doonside is 20-29 years. Households in Doonside are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Doonside work in a clerical occupation. In 2011, 55.4% of the homes in Doonside were owner-occupied compared with 52.2% in 2016. Currently the median sales price of houses in the area is $800,500.