Fertility in New Zealand, 2021
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2021
Total fertility rate: 1.65
The total fertility rate of New Zealand was 1.65 children per woman in 2021 — below the replacement level of about 2.1. Births were most frequent among women aged 30-34 (108 per 1,000 women in that age group), and the average mother was 30.6 years old. In total, 58,853 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 2021
Total fertility rate
1.65
Births
58,853
Births per 1,000 people
11.5
Mean age of mothers
30.6
Births to mothers aged 15–19
2.9%
Net reproduction rate
0.79
Boys per 100 girls at birth
105.3
Population
5,107,696
The net reproduction rate counts only daughters who survive to their mothers' age: below 1, each generation of women is smaller than the one before.
Fertility by age of mother, 2021
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.1 | 0.0% | 14 |
| 15-19 | 10.9 | 3.3% | 1,679 |
| 20-24 | 47.8 | 14.5% | 7,706 |
| 25-29 | 87.2 | 26.3% | 15,780 |
| 30-34 | 107.5 | 32.5% | 20,588 |
| 35-39 | 62.7 | 18.9% | 10,766 |
| 40-44 | 13.7 | 4.1% | 2,162 |
| 45-49 | 1.0 | 0.3% | 159 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in New Zealand by year