The size of Northgate is approximately 1 square kilometres. It has 5 parks covering nearly 5.8% of total area. The population of Northgate in 2011 was 3,578 people. By 2016 the population was 6,207 showing a population growth of 73.5% in the area during that time. The predominant age group in Northgate is 30-39 years. Households in Northgate are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Northgate work in a professional occupation. In 2011, 75.5% of the homes in Northgate were owner-occupied compared with 68.5% in 2016. Currently the median sales price of houses in the area is $710,000.