How postcodes work

When you use a postcode you help us to make sure your mail is delivered to the right address.

Every delivery point in New Zealand has been assigned a postcode. Postcodes help to identify the delivery address when there are the same or similar street and town names used nationwide.

Use our Address & Postcode Finder to locate postcodes.

How postcodes work

Postcodes are four digits and each digit has a specific meaning.

The first digit of the postcode represents one of ten machine 'lines' (numbered 0 - 9), which process mail for a specific geographic region. These run north to south in ascending order.

The second and third digits reflect postal sort areas and our New Zealand Post delivery network - urban posties, New Zealand Post PO Boxes, Private Bags and RuralPost.

The fourth digit identifies the specific box lobby, rural delivery round or urban area.

How to use postcodes

A postcode should be used on all addresses. If the postcode contains a leading zero, this zero must be included. The postcode must not include separators or spaces.

There are only one or two spaces between town/city and postcode, for example:

  • Auckland 1112
  • Christchurch 8110

For more details download the Quick guide to addressing your letters and parcels (PDF - 154KB)

Terms and conditions

The standard terms and conditions of the products and services offered by New Zealand Post Limited, including information on the extent of our liability, are set out in the Public Contract and the Postal Users' Guide. They are also available for reference at PostShop stores and selected New Zealand Post retail outlets.

Delivery targets

Delivery targets are a guide only and we do not guarantee your item will reach its destination within the delivery target. Delivery to and from rural or remote areas may take longer.

Required postage

The required postage is the value of postage required for New Zealand Post to carry the item. Actual price paid may vary instore. The required postage and specifications are subject to change.

Cover for loss or damage, prohibited & restricted items

Before sending mail items, make sure your item is safe to send and will be covered if it goes missing or is damaged. Make sure you read about cover for loss or damage and prohibited & restricted items.