The size of Pinnacle is approximately 128.7 square kilometres. It has 1 park. The population of Pinnacle in 2011 was 185 people. By 2016 the population was 28 showing a population decline of 84.9% in the area during that time. The predominant age group in Pinnacle is 50-59 years. Households in Pinnacle are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Pinnacle work in a managers occupation. In 2006, 17.1% of the homes in Pinnacle were owner-occupied compared with 81.6% in 2011.