The size of Mooroolbark is approximately 12.4 square kilometres. It has 31 parks covering nearly 6.2% of total area. The population of Mooroolbark in 2011 was 20,689 people. By 2016 the population was 21,968 showing a population growth of 6.2% in the area during that time. The predominant age group in Mooroolbark is 20-29 years. Households in Mooroolbark are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Mooroolbark work in a trades occupation. In 2011, 80.2% of the homes in Mooroolbark were owner-occupied compared with 78.8% in 2016. Currently the median sales price of houses in the area is $855,500.