The size of Boonah is approximately 53.7 square kilometres. It has 1 park covering nearly 1% of total area. The population of Boonah in 2011 was 1,393 people. By 2016 the population was 13 showing a population decline of 99.1% in the area during that time. The predominant age group in Boonah is 30-39 years. Households in Boonah are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Boonah work in a managers occupation. In 2006, 31.4% of the homes in Boonah were owner-occupied compared with 69.4% in 2011.