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Postcode or suburb
 

You can inquire postcodes by suburbs or inquire suburbs by postcodes here. 

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

Postcodes are published in booklets available from post offices or online from the Australia Post website.

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