The size of Firefly is approximately 46.7 square kilometres. The population of Firefly in 2011 was 489 people. By 2016 the population was 269 showing a population decline of 45.0% in the area during that time. The predominant age group in Firefly is 60-69 years. Households in Firefly are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Firefly work in a managers occupation. In 2011, 80% of the homes in Firefly were owner-occupied compared with 77% in 2016. Currently the median sales price of houses in the area is $610,000.