The size of Mount Garnet is approximately 503.8 square kilometres. It has 19 parks covering nearly 0.8% of total area. The population of Mount Garnet in 2011 was 436 people. By 2016 the population was 419 showing a population decline of 3.9% in the area during that time. The predominant age group in Mount Garnet is 60-69 years. Households in Mount Garnet are primarily childless couples and are likely to be repaying $800 - $999 per month on mortgage repayments. In general, people in Mount Garnet work in a labourer occupation. In 2011, 52.7% of the homes in Mount Garnet were owner-occupied compared with 53.4% in 2016. Currently the median sales price of houses in the area is $180,000.