The size of Gormanston is approximately 67.4 square kilometres. It has 15 parks covering nearly 49.5% of total area. The population of Gormanston in 2011 was 824 people. By 2016 the population was 6 showing a population decline of 99.3% in the area during that time. The predominant age group in Gormanston is 50-59 years. Households in Gormanston are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Gormanston work in a labourer occupation. In 2011, 63.3% of the homes in Gormanston were owner-occupied compared with 100% in 2016.