The size of Tea Tree Gully is approximately 4.3 square kilometres. It has 13 parks covering nearly 38.6% of total area. The population of Tea Tree Gully in 2011 was 3,124 people. By 2016 the population was 3,253 showing a population growth of 4.1% in the area during that time. The predominant age group in Tea Tree Gully is 40-49 years. Households in Tea Tree Gully are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Tea Tree Gully work in a professional occupation. In 2011, 84.1% of the homes in Tea Tree Gully were owner-occupied compared with 81.9% in 2016. Currently the median sales price of houses in the area is $556,333.