The size of Cathcart is approximately 34.1 square kilometres. It has 2 parks covering nearly 0.5% of total area. The population of Cathcart in 2011 was 247 people. By 2016 the population was 77 showing a population decline of 68.8% in the area during that time. The predominant age group in Cathcart is 60-69 years. Households in Cathcart are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Cathcart work in a trades occupation. In 2011, 86.5% of the homes in Cathcart were owner-occupied compared with 89.2% in 2016.