The size of Penong is approximately 1,406.2 square kilometres. It has 10 parks covering nearly 6.3% of total area. The population of Penong in 2011 was 340 people. By 2016 the population was 288 showing a population decline of 15.3% in the area during that time. The predominant age group in Penong is 50-59 years. Households in Penong are primarily couples with children and are likely to be repaying $800 - $999 per month on mortgage repayments. In general, people in Penong work in a managers occupation. In 2011, 55.7% of the homes in Penong were owner-occupied compared with 67.4% in 2016.