The size of Northampton is approximately 11.8 square kilometres. It has 7 parks covering nearly 0.2% of total area. The population of Northampton in 2011 was 867 people. By 2016 the population was 811 showing a population decline of 6.5% in the area during that time. The predominant age group in Northampton is 60-69 years. Households in Northampton are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Northampton work in a machinery operators and drivers occupation. In 2011, 71% of the homes in Northampton were owner-occupied compared with 72.5% in 2016. Currently the median sales price of houses in the area is $215,000.