The size of Serpentine is approximately 104.8 square kilometres. It has 17 parks covering nearly 32% of total area. The population of Serpentine in 2011 was 2,024 people. By 2016 the population was 2,305 showing a population growth of 13.9% in the area during that time. The predominant age group in Serpentine is 50-59 years. Households in Serpentine are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Serpentine work in a trades occupation. In 2011, 83.9% of the homes in Serpentine were owner-occupied compared with 86.8% in 2016. Currently the median sales price of houses in the area is $722,500.