The size of Bellthorpe is approximately 74.2 square kilometres. It has 6 parks covering nearly 62.8% of total area. The population of Bellthorpe in 2011 was 320 people. By 2016 the population was 129 showing a population decline of 59.7% in the area during that time. The predominant age group in Bellthorpe is 50-59 years. Households in Bellthorpe are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Bellthorpe work in a managers occupation. In 2011, 70.8% of the homes in Bellthorpe were owner-occupied compared with 83% in 2016.