The size of Renwick is approximately 1.4 square kilometres. The population of Renwick in 2011 was 417 people. By 2016 the population was 558 showing a population growth of 33.8% in the area during that time. The predominant age group in Renwick is 0-9 years. Households in Renwick are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Renwick work in a professional occupation. In 2011, 76.3% of the homes in Renwick were owner-occupied compared with 80% in 2016. Currently the median sales price of houses in the area is $1,150,000.