The size of Benloch is approximately 26.8 square kilometres. It has 5 parks covering nearly 17% of total area. The population of Benloch in 2011 was 2,356 people. By 2016 the population was 122 showing a population decline of 94.8% in the area during that time. The predominant age group in Benloch is 10-19 years. Households in Benloch are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Benloch work in a professional occupation. In 2011, 84.6% of the homes in Benloch were owner-occupied compared with 74.4% in 2016.