The size of Merricks is approximately 11.9 square kilometres. It has 1 park. The population of Merricks in 2011 was 1,171 people. By 2016 the population was 175 showing a population decline of 85.1% in the area during that time. The predominant age group in Merricks is 50-59 years. Households in Merricks are primarily childless couples and are likely to be repaying $800 - $999 per month on mortgage repayments. In general, people in Merricks work in a managers occupation. In 2011, 84.1% of the homes in Merricks were owner-occupied compared with 84.8% in 2016.