The size of Bittern is approximately 17.1 square kilometres. It has 11 parks covering nearly 7.9% of total area. The population of Bittern in 2011 was 3,378 people. By 2016 the population was 3,699 showing a population growth of 9.5% in the area during that time. The predominant age group in Bittern is 50-59 years. Households in Bittern are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Bittern work in a trades occupation. In 2011, 85.8% of the homes in Bittern were owner-occupied compared with 83.6% in 2016. Currently the median sales price of houses in the area is $803,750.