The size of Greenhill is approximately 7.7 square kilometres. It has 2 parks covering nearly 1.2% of total area. The population of Greenhill in 2011 was 685 people. By 2016 the population was 731 showing a population growth of 6.7% in the area during that time. The predominant age group in Greenhill is 0-9 years. Households in Greenhill are primarily single parents and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Greenhill work in a labourer occupation. In 2011, 63.5% of the homes in Greenhill were owner-occupied compared with 60.7% in 2016. Currently the median sales price of houses in the area is $360,000.