Postcodes used in Oceania vary between the various sovereign nations, territories, and associated states in the region. Many of the smaller island regions in Oceania use postal code systems that are integrated into the postal systems of larger countries they are territories or associates of.
See also: List of U.S. state abbreviations. In addition to the U.S. State of Hawai'i, there are two territories, one commonwealth, and three freely associated states within Oceania that are administered by the United States Postal Service (U.S.P.S.). All of these places use zip codes that start with the prefixes 967, 968, or 969. Standard USPS domestic rates apply to mail between the United States and these places.
See main article: Postcodes in Australia. Postcodes were introduced in Australia in 1967 by the Postmaster-General's Department and are now managed by Australia Post, and are published in booklets available from post offices or online from the Australia Post website. Postcodes in Australia have four digits and are placed at the end of the Australian address.
See also: Postal codes in France. 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. Like Overseas Départements and Territories around the world, the French postal service uses 3-digit codes to refer to these places: 987 for French Polynesia, 988 for New Caledonia, and 986 for Wallis and Futuna.
See main article: Postcodes in New Zealand.
The Pitcairn Islands is integrated into the postal code system of the United Kingdom.