The size of Willow Tree is approximately 133.1 square kilometres. It has 2 parks covering nearly 0.2% of total area. The population of Willow Tree in 2011 was 421 people. By 2016 the population was 297 showing a population decline of 29.5% in the area during that time. The predominant age group in Willow Tree is 60-69 years. Households in Willow Tree are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Willow Tree work in a managers occupation. In 2011, 73.6% of the homes in Willow Tree were owner-occupied compared with 71.8% in 2016. Currently the median sales price of houses in the area is $105,750.