The size of Welbungin is approximately 559.5 square kilometres. It has 4 parks covering nearly 1.9% of total area. The population of Welbungin in 2011 was 293 people. By 2016 the population was 21 showing a population decline of 92.8% in the area during that time. The predominant age group in Welbungin is 50-59 years. Households in Welbungin are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Welbungin work in a managers occupation. In 2011, 65.8% of the homes in Welbungin were owner-occupied compared with 108.3% in 2016.