The size of Walloon is approximately 18.4 square kilometres. It has 12 parks covering nearly 0.7% of total area. The population of Walloon in 2011 was 1,547 people. By 2016 the population was 1,583 showing a population growth of 2.3% in the area during that time. The predominant age group in Walloon is 40-49 years. Households in Walloon are primarily couples with children and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Walloon work in a trades occupation. In 2011, 86.9% of the homes in Walloon were owner-occupied compared with 85.4% in 2016. Currently the median sales price of houses in the area is $424,950.