How is the population changing?
Where the growth came from
Population change in each year to June
An older population
People by age and sex, 2025 and 2005
By region
Year to June 2025. Migration within New Zealand moves people between regions but adds nothing nationally.
Fastest and slowest-growing districts since 2018
Oldest and youngest districts
Median age, 2025. Half the people are older than this.
About these numbers
Estimated resident population is Stats NZ's estimate of everyone who usually lives in New Zealand, based on the 2023 Census and updated with births, deaths and migration.
Census adjustment (Stats NZ's "intercensal discrepancy") is the difference between estimates rolled forward from one census and what the next census found. It's spread over 2018 to 2023.
Net migration here is measured differently from the monthly migration figures, so the numbers don't match exactly.
Source: Stats NZ subnational population estimates (Aotearoa Data Explorer: POPES_SUB_001, POPES_SUB_004, POPES_SUB_006), at 30 June 2025.