Population Aged 18 & Older
Published: May 7, 2025This report analyses the estimated resident population of New Zealand aged 18 and older. The estimated resident population refers to all the people who usually live in New Zealand on a given date. The data from this report is sourced from Statistics New Zealand (Tatauranga Aotearoa) and is measured in people residing in New Zealand at the end of each financial year.
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Recent Trends – Population Aged 18 & Older
IBISWorld forecasts the New Zealand population aged 18 and older will increase by 1.2% during 2025-26, to reach 4,187,800 people. Exposure to a global uncertainties and recessionary risks have heightened concerns in the current year. For example, housing supply and inflationary concerns have remained at the forefront, partially limiting net migration. Nevertheless the natural growth of the population aged 18 and older has been supported by advancements in healthcare and medical technology, which have allowed for an expansion of New Zealand’s life expectancy.
In addition, extended periods of border restrictions significantly constrained non-New Zealand citizen migration into the country. However, the removal of international border restrictions in 2022-23 provided a catalyst to contribute to an increase in net migration, driving growth in the population aged 18 and older.
5-Year Outlook – Population Aged 18 & Older
IBISWorld forecasts the New Zealand population aged 18 and older wi...
