The size of Yallah is approximately 8.5 square kilometres. It has 3 parks covering nearly 9.9% of total area. The population of Yallah in 2011 was 693 people. By 2016 the population was 148 showing a population decline of 78.6% in the area during that time. The predominant age group in Yallah is 50-59 years. Households in Yallah are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Yallah work in a community and personal service occupation. In 2011, 88.1% of the homes in Yallah were owner-occupied compared with 76.3% in 2016.