Postcodes used in Oceania vary between the various sovereign nations, territories, and associated states in the region.
Standard USPS domestic rates apply to mail between the United States and these places.
Postcodes in Australia have four digits and are placed at the end of the Australian address.
There are three French Overseas Départements or Territories in Oceania that are integrated into the postal code system of France: French Polynesia, New Caledonia, and Wallis and Futuna.
The Pitcairn Islands is integrated into the postal code system of the United Kingdom.