Average age of population | New Zealand – yearly data, chart and table

The average age of population of New Zealand in 2025 amounted to 37.74 years old, which is 0.619% more than in 2024, when it was  37.50 years old. It has been growing in this country for already 7 years in a row. Over the entire period of data from the United Nations Department of Economic and Social Affairs since 1950, this indicator has increased in 1.33 times. The lowest average age of population was recorded in 1970, when it was 24.60 years old. The highest value was in 2025, when average age of population in New Zealand reached 37.74 years old. The data is sourced from the UN report "World Population Prospects 2024", with the values for 2024 and 2025 being projections.