The size of Bonython is approximately 2.9 square kilometres. It has 7 parks covering nearly 48.4% of total area. The population of Bonython in 2011 was 3,838 people. By 2016 the population was 3,786 showing a population decline of 1.4% in the area during that time. The predominant age group in Bonython is 50-59 years. Households in Bonython are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Bonython work in a professional occupation. In 2011, 64% of the homes in Bonython were owner-occupied compared with 65.8% in 2016. Currently the median sales price of houses in the area is $873,000.