The size of Sandgate is approximately 3.2 square kilometres. It has 9 parks covering nearly 34.3% of total area. The population of Sandgate in 2011 was 4,625 people. By 2016 the population was 4,893 showing a population growth of 5.8% in the area during that time. The predominant age group in Sandgate is 40-49 years. Households in Sandgate are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Sandgate work in a professional occupation. In 2011, 59.4% of the homes in Sandgate were owner-occupied compared with 60.9% in 2016. Currently the median sales price of houses in the area is $885,000.