The size of Kelso is approximately 17.2 square kilometres. It has 11 parks covering nearly 6% of total area. The population of Kelso in 2011 was 10,202 people. By 2016 the population was 10,527 showing a population growth of 3.2% 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 $1400 - $1799 per month on mortgage repayments. In general, people in Kelso work in a trades occupation. In 2011, 66.2% of the homes in Kelso were owner-occupied compared with 63.7% in 2016. Currently the median sales price of houses in the area is $278,500.