The size of Byangum is approximately 9.1 square kilometres. It has 2 parks covering nearly 2.9% of total area. The population of Byangum in 2011 was 336 people. By 2016 the population was 122 showing a population decline of 63.7% in the area during that time. The predominant age group in Byangum is 60-69 years. Households in Byangum are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Byangum work in a professional occupation. In 2011, 77.3% of the homes in Byangum were owner-occupied compared with 66.6% in 2016.