Trying to find a simple and free way to see if someone is in the North or South Island by there post code.
Does anyone know of any "rules" around numbers.. i.e <3000 is South Island?
A quick Google pointed me to this: https://www.nzpost.co.nz/personal/sending-within-nz/how-to-address-mail/postcodes/postcode-maps
To quote the second link:
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.
Didn't expect it to be that easy. Thanks lads.