The size of Waterloo is approximately 63 square kilometres. It has 2 parks. The population of Waterloo in 2011 was 407 people. By 2016 the population was 102 showing a population decline of 74.9% in the area during that time. The predominant age group in Waterloo is 60-69 years. Households in Waterloo are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Waterloo work in a managers occupation. In 2011, 89.4% of the homes in Waterloo were owner-occupied compared with 72.1% in 2016.