The size of Katherine is approximately 4.2 square kilometres. It has 2 parks covering nearly 7.3% of total area. The population of Katherine in 2011 was 1,376 people. By 2016 the population was 1,490 showing a population growth of 8.3% in the area during that time. The predominant age group in Katherine is 20-29 years. Households in Katherine are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Katherine work in a professional occupation. In 2011, 42.3% of the homes in Katherine were owner-occupied compared with 43.8% in 2016. Currently the median sales price of houses in the area is $407,500.