Postcodes in Australia

Australian postcodes have four numerals; envelopes for posting within Australia show this.

Postcodes are used in Australia to sort and send mail to the correct address. All postcodes in Australia have four numerals and are placed at the end of the address. Australian postcodes are managed by Australia Post.

Postcodes are published in small books that can be collected from your nearest post offices, or online at the Australia Post website.

On envelopes and postcards there are often four square boxes printed in orange ink at the bottom right for the postcode numerals. These are used when addressing mail by hand.