The size of Keybarbin is approximately 57.6 square kilometres. It has 14 parks covering nearly 46.5% of total area. The population of Keybarbin in 2006 was 155 people. By 2011 the population was 255 showing a population growth of 64.5% in the area during that time. The predominant age group in Keybarbin is 50-59 years. Households in Keybarbin are primarily childless couples and are likely to be repaying $600 - $799 per month on mortgage repayments. In general, people in Keybarbin work in a managers occupation. In 2006, 79% of the homes in Keybarbin were owner-occupied compared with 68.8% in 2011.