The size of Hindmarsh is approximately 284.6 square kilometres. It has 4 parks covering nearly 1% of total area. The population of Hindmarsh in 2011 was 306 people. By 2016 the population was 19 showing a population decline of 93.8% in the area during that time. The predominant age group in Hindmarsh is 10-19 years. Households in Hindmarsh are primarily couples with children and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Hindmarsh work in a managers occupation. In 2011, 70.4% of the homes in Hindmarsh were owner-occupied compared with 66.6% in 2016.