1,812 Postal Codes in New Zealand

The average area for zip codes in New Zealand is 248.4 km² with the largest being 9679 in Southland at 7,433.8 km² and the smallest being 3332 in Wairakei, Waikato at 0.307 km². In New Zealand the average population for a postal code is 4,136 with the most populated being zip code 0632 at 47,070. The average population density for a postal code in New Zealand is 280.9 / km² with the densest being zip code 1021 in Arch Hill, Auckland at 4,136 / km². The median age for postal codes in New Zealand range from 32.2 years old for 3214 in Hamilton, Waikato to 51.1 years old for 3500 in Thames, Waikato. The fastest growing postal code is 7618 in Rolleston, Canterbury with population growth of 154.8% from 2000 to 2015, an average of 6.4% per year.