Fertility rates by age group in New Zealand
1965, 1995, & 2025, live births per 1000 women in age group
| Year | Age group | Live births per 1000 mean estimated female population in age group |
|---|---|---|
| 1965 | 10-14 | 0.31 |
| 1965 | 15-19 | 58.74 |
| 1965 | 20-24 | 230.18 |
| 1965 | 25-29 | 214.8 |
| 1965 | 30-34 | 120.11 |
| 1965 | 35-39 | 61.42 |
| 1965 | 40-44 | 19.54 |
| 1965 | 45-49 | 1.39 |
| 1995 | 10-14 | 0.29 |
| 1995 | 15-19 | 33.39 |
| 1995 | 20-24 | 83.01 |
| 1995 | 25-29 | 123.36 |
| 1995 | 30-34 | 106.15 |
| 1995 | 35-39 | 43.5 |
| 1995 | 40-44 | 7.19 |
| 1995 | 45-49 | 0.37 |
| 2025 | 10-14 | 0.11 |
| 2025 | 15-19 | 9.09 |
| 2025 | 20-24 | 42.08 |
| 2025 | 25-29 | 81.63 |
| 2025 | 30-34 | 102.7 |
| 2025 | 35-39 | 61.72 |
| 2025 | 40-44 | 13.73 |
| 2025 | 45-49 | 1.02 |
Definitions
Age-specific fertility rates: Live births per 1,000 mean estimated female population in each age group. The 45-49 year age group includes births to women aged 45 years and over per 1,000 estimated women aged 45-49 years.
For more information
Changes to data collection/processing
Rates from 1991 onward are based on the resident population concept. Before 1991, rates are based on the de facto population concept. Vitals data (births, deaths and marriages) is based on date of registration (not date of occurrence).
Māori rates from 1991 onwards are based on the ethnicity of the mother. Before 1991, rates are based on the ethnicity of the child.
From September 1995, birth and death registrations collected ethnicity based on self-identification, rather than degree-of-blood.
Data provided by
Dataset name
Births and Deaths: Age-specific fertility rates by 5 year age group (Māori and total population) (Annual-Dec) 2025
Webpage:
https://infoshare.stats.govt.nz/
How to find the data
At URL provided, select 'Population > Births - DFM > Age-specific fertility rates by 5 year age group (Maori and total population) (Annual-Dec)'. All variables were selected to create this dataset.
Import & extraction details
File as imported: Births and Deaths: Age-specific fertility rates by 5 year age group (Māori and total population) (Annual-Dec) 2025
From the dataset Births and Deaths: Age-specific fertility rates by 5 year age group (Māori and total population) (Annual-Dec) 2025, this data was extracted:
- Rows: 4-67
- Columns: 2-33
- Provided: 1,024 data points
This data forms the table Births - Age-specific fertility rates by age group for Māori and total population 1962–2025.
Dataset originally released on:
February 17, 2026
Purpose of collection
Under the provisions of the Births, Deaths, Marriages, and Relationships Registration Act 1995, every birth occurring in New Zealand must be registered.
Birth statistics provide local authorities, health authorities, and research institutions with information needed to plan future and current social services.