Fertility in Tonga, 2017
Tonga
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2017
Total fertility rate: 3.39
The total fertility rate of Tonga was 3.39 children per woman in 2017 — above the replacement level of about 2.1. Births were most frequent among women aged 25-29 (185 per 1,000 women in that age group), and the average mother was 30.0 years old. In total, 2,583 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 2017
Total fertility rate
3.39
Births
2,583
Births per 1,000 people
24.5
Mean age of mothers
30.0
Births to mothers aged 15–19
5.4%
Net reproduction rate
1.58
Boys per 100 girls at birth
108.1
Population
105,356
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, 2017
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.3 | 0.0% | 1 |
| 15-19 | 25.4 | 3.8% | 140 |
| 20-24 | 137.8 | 20.4% | 625 |
| 25-29 | 185.2 | 27.4% | 697 |
| 30-34 | 176.1 | 26.1% | 660 |
| 35-39 | 104.8 | 15.5% | 330 |
| 40-44 | 41.0 | 6.1% | 117 |
| 45-49 | 5.0 | 0.7% | 14 |
| 50-54 | 0.2 | 0.0% | 0 |
Fertility in Tonga by year