Fertility in Tonga, 2023
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2023
Total fertility rate: 3.13
The total fertility rate of Tonga was 3.13 children per woman in 2023 — above the replacement level of about 2.1. Births were most frequent among women aged 25-29 (171 per 1,000 women in that age group), and the average mother was 29.9 years old. In total, 2,418 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 2023
Total fertility rate
3.13
Births
2,418
Births per 1,000 people
23.1
Mean age of mothers
29.9
Births to mothers aged 15–19
6.0%
Net reproduction rate
1.47
Boys per 100 girls at birth
108.1
Population
104,598
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, 2023
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.3 | 0.1% | 1 |
| 15-19 | 24.8 | 4.0% | 145 |
| 20-24 | 124.9 | 20.0% | 614 |
| 25-29 | 171.2 | 27.4% | 663 |
| 30-34 | 165.2 | 26.5% | 546 |
| 35-39 | 96.4 | 15.4% | 324 |
| 40-44 | 37.5 | 6.0% | 113 |
| 45-49 | 3.7 | 0.6% | 10 |
| 50-54 | 0.1 | 0.0% | 0 |
Fertility in Tonga by year