Fertility in Australia, 2021
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2021
Total fertility rate: 1.65
The total fertility rate of Australia 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 (116 per 1,000 women in that age group), and the average mother was 31.4 years old. In total, 304,162 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 2021
Total fertility rate
1.65
Births
304,162
Births per 1,000 people
11.7
Mean age of mothers
31.4
Births to mothers aged 15–19
1.7%
Net reproduction rate
0.79
Boys per 100 girls at birth
105.7
Population
25,956,417
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% | 44 |
| 15-19 | 7.1 | 2.1% | 5,147 |
| 20-24 | 37.6 | 11.4% | 30,088 |
| 25-29 | 82.9 | 25.1% | 76,083 |
| 30-34 | 116.0 | 35.1% | 112,297 |
| 35-39 | 70.0 | 21.2% | 66,033 |
| 40-44 | 16.0 | 4.8% | 13,473 |
| 45-49 | 1.2 | 0.4% | 998 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in Australia by year