The size of Barrington is approximately 24.6 square kilometres. It has 5 parks covering nearly 18.3% of total area. The population of Barrington in 2011 was 431 people. By 2016 the population was 203 showing a population decline of 52.9% in the area during that time. The predominant age group in Barrington is 50-59 years. Households in Barrington are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Barrington work in a managers occupation. In 2011, 88.9% of the homes in Barrington were owner-occupied compared with 84.5% in 2016.