The size of Rainbow is approximately 890.7 square kilometres. It has 24 parks covering nearly 3.6% of total area. The population of Rainbow in 2011 was 735 people. By 2016 the population was 688 showing a population decline of 6.4% in the area during that time. The predominant age group in Rainbow is 60-69 years. Households in Rainbow are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Rainbow work in a managers occupation. In 2011, 79.4% of the homes in Rainbow were owner-occupied compared with 82.2% in 2016. Currently the median sales price of houses in the area is $95,000.