The size of Marangaroo is approximately 4.8 square kilometres. It has 9 parks covering nearly 5.2% of total area. The population of Marangaroo in 2011 was 10,518 people. By 2016 the population was 10,578 showing a population growth of 0.6% in the area during that time. The predominant age group in Marangaroo is 30-39 years. Households in Marangaroo are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Marangaroo work in a trades occupation. In 2011, 78.1% of the homes in Marangaroo were owner-occupied compared with 77.9% in 2016. Currently the median sales price of houses in the area is $460,000.