The size of Tanglewood is approximately 5.8 square kilometres. It has 1 park covering nearly 20.5% of total area. The population of Tanglewood in 2011 was 261 people. By 2016 the population was 77 showing a population decline of 70.5% in the area during that time. The predominant age group in Tanglewood is 0-9 years. Households in Tanglewood are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Tanglewood work in a professional occupation. In 2011, 67.8% of the homes in Tanglewood were owner-occupied compared with 66.7% in 2016.