The size of Manly Vale is approximately 1.7 square kilometres. It has 7 parks covering nearly 13.3% of total area.
The population of Manly Vale in 2011 was 5,701 people. By 2016 the population was 6,144 showing a population growth of 7.8% in the area during that time.
The predominant age group in Manly Vale is 30-39 years. Households in Manly Vale are primarily couples with children and are likely to be repaying $1800 – $2399 per month on mortgage repayments.
In general, people in Manly Vale work in a professional occupation. In 2011, 61.5% of the homes in Manly Vale were owner-occupied compared with 58.4% in 2016.