The size of Henley Brook is approximately 13.3 square kilometres. It has 12 parks covering nearly 1.5% of total area. The population of Henley Brook in 2011 was 2,642 people. By 2016 the population was 2,498 showing a population decline of 5.5% in the area during that time. The predominant age group in Henley Brook is 10-19 years. Households in Henley Brook are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Henley Brook work in a trades occupation. In 2011, 82.1% of the homes in Henley Brook were owner-occupied compared with 82.1% in 2016. Currently the median sales price of houses in the area is $750,000.