The size of Cranbrook is approximately 196.1 square kilometres. It has 17 parks covering nearly 12.6% of total area. The population of Cranbrook in 2011 was 278 people. By 2016 the population was 58 showing a population decline of 79.1% in the area during that time. The predominant age group in Cranbrook is 40-49 years. Households in Cranbrook are primarily childless couples and are likely to be repaying $600 - $799 per month on mortgage repayments. In general, people in Cranbrook work in a managers occupation. In 2011, 67% of the homes in Cranbrook were owner-occupied compared with 52% in 2016.