The size of Glenthorne is approximately 9.4 square kilometres. It has 2 parks. The population of Glenthorne in 2011 was 264 people. By 2016 the population was 228 showing a population decline of 13.6% in the area during that time. The predominant age group in Glenthorne is 60-69 years. Households in Glenthorne are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Glenthorne work in a professional occupation. In 2011, 77.3% of the homes in Glenthorne were owner-occupied compared with 75% in 2016. Currently the median sales price of houses in the area is $400,000.