The size of Deepdene is approximately 0.9 square kilometres. It has 3 parks covering nearly 4.1% of total area. The population of Deepdene in 2011 was 2,378 people. By 2016 the population was 2,029 showing a population decline of 14.7% in the area during that time. The predominant age group in Deepdene is 50-59 years. Households in Deepdene are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Deepdene work in a professional occupation. In 2011, 77.7% of the homes in Deepdene were owner-occupied compared with 72.8% in 2016. Currently the median sales price of houses in the area is $3,275,000.