Home Postcodes by state Australian postcodes by state Pick a state or territory to browse its postcodes, or use the postcode finder if you already know the suburb. Between them the eight cover 15,930 localities and 2,642 delivery-area postcodes. Australian Capital Territory 140 localities across 26 postcodes New South Wales 4,725 localities across 620 postcodes Northern Territory 257 localities across 31 postcodes Queensland 3,376 localities across 446 postcodes South Australia 1,745 localities across 336 postcodes Tasmania 779 localities across 116 postcodes Victoria 3,170 localities across 694 postcodes Western Australia 1,738 localities across 388 postcodes