The size of Fernside is approximately 15.6 square kilometres. The population of Fernside in 2011 was 237 people. By 2016 the population was 28 showing a population decline of 88.2% in the area during that time. The predominant age group in Fernside is 10-19 years. Households in Fernside are primarily couples with children and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Fernside work in a sales workers occupation. In 2011, 80.7% of the homes in Fernside were owner-occupied compared with 64.7% in 2016.