The size of Mona Vale is approximately 4.9 square kilometres. It has 18 parks covering nearly 6.5% of total area. The population of Mona Vale in 2011 was 10,166 people. By 2016 the population was 10,652 showing a population growth of 4.8% in the area during that time. The predominant age group in Mona Vale is 40-49 years. Households in Mona Vale are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Mona Vale work in a professional occupation. In 2011, 72.9% of the homes in Mona Vale were owner-occupied compared with 74.8% in 2016. Currently the median sales price of houses in the area is $2,601,000.