New Zealand Population 2025 Estimate. As of 2025, the population of new zealand is projected at 5.21 million, compared to 5.17 million in 2023. Below, we look at some of the changes the updates reveal:

An estimate of ~4,500fte more. Currently, 83.4 % of the population of new zealand is urban (4,349,435 people in 2025) population density the 2025 population density in new zealand is 20 people per km 2 (51.