The size of Boyanup is approximately 70.6 square kilometres. It has 21 parks covering nearly 6.9% of total area. The population of Boyanup in 2011 was 1,264 people. By 2016 the population was 1,224 showing a population decline of 3.2% in the area during that time. The predominant age group in Boyanup is 50-59 years. Households in Boyanup are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Boyanup work in a trades occupation. In 2011, 82.5% of the homes in Boyanup were owner-occupied compared with 82.9% in 2016. Currently the median sales price of houses in the area is $455,500.