The size of Belanglo is approximately 60.6 square kilometres. It has 2 parks covering nearly 63.8% of total area. The population of Belanglo in 2011 was 578 people. By 2016 the population was 20 showing a population decline of 96.5% in the area during that time. The predominant age group in Belanglo is 10-19 years. Households in Belanglo are primarily childless couples and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Belanglo work in a managers occupation. In 2011, 72.3% of the homes in Belanglo were owner-occupied compared with 100% in 2016.