The size of Ranga is approximately 67.5 square kilometres. It has 7 parks covering nearly 2% of total area. The population of Ranga in 2011 was 261 people. By 2016 the population was 30 showing a population decline of 88.5% in the area during that time. The predominant age group in Ranga is 60-69 years. Households in Ranga are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Ranga work in a managers occupation. In 2011, 66.4% of the homes in Ranga were owner-occupied compared with 71.4% in 2016.