The size of Kelso is approximately 31.8 square kilometres. It has 10 parks covering nearly 1.3% of total area. The population of Kelso in 2011 was 7,725 people. By 2016 the population was 8,947 showing a population growth of 15.8% in the area during that time. The predominant age group in Kelso is 0-9 years. Households in Kelso are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Kelso work in a professional occupation. In 2011, 69.7% of the homes in Kelso were owner-occupied compared with 68.2% in 2016. Currently the median sales price of houses in the area is $600,000.