List of all NZ postcodes, name of suburb associated with the postcode, along with associated geographic shape of the postcode area (in WKT form ideally) - all available to be downloaded into a single CSV file. Having the total population within each postcode would be a bonus.

Currently it is difficult to identify which NZ postcodes exist, and what area they cover. At the moment, the only source of NZ postcodes seems to be a series of PDF files, which are difficult to run analyses on.

Having a clear and complete set of postcodes that is easily accessible, and can easily use for analysis in bulk.