View a list of Postal Codes in AustraliaThe average area for zip codes in Australia is 2,910.9 km² with the largest being 0872 in Northern Territory at 1,002,280.6 km² and the smallest being 2007 in Ultimo, State of New South Wales at 0.561 km². In Australia the average population for a postal code is 9,075 with the most populated being zip code 4350 in Mount Kynoch, State of Queensland at 114,408. The average population density for a postal code in Australia is 672.5 / km² with the densest being zip code 2010 in Darlinghurst, State of New South Wales at 12,528 / km². The median age for postal codes in Australia range from 19.5 years old for 2703 in Yanco, State of New South Wales to 64.8 years old for 3944 in Portsea, State of Victoria. The fastest growing postal code is 6038 in Carabooda, State of Western Australia with population growth of 162.5% from 2000 to 2015, an average of 6.6% per year.
