The size of Calamia is approximately 89.6 square kilometres. It has 5 parks covering nearly 41.8% of total area. The population of Calamia in 2011 was 267 people. By 2016 the population was 12 showing a population decline of 95.5% in the area during that time. The predominant age group in Calamia is 40-49 years. Households in Calamia are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Calamia work in a labourer occupation. In 2011, 84% of the homes in Calamia were owner-occupied compared with 114.3% in 2016.