The size of Piallaway is approximately 298.8 square kilometres. It has 1 park covering nearly 2.8% of total area. The population of Piallaway in 2011 was 239 people. By 2016 the population was 145 showing a population decline of 39.3% in the area during that time. The predominant age group in Piallaway is 60-69 years. Households in Piallaway are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Piallaway work in a managers occupation. In 2011, 59.8% of the homes in Piallaway were owner-occupied compared with 63.6% in 2016.