Fertility in Kiribati, 2025
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2025
Total fertility rate: 3.09
The total fertility rate of Kiribati is projected at 3.09 children per woman in 2025 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (164 per 1,000 women in that age group), and the average mother would be 29.0 years old. In total, 3,385 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).
Key indicators, 2025
Total fertility rate
3.09
Births
3,385
Births per 1,000 people
24.8
Mean age of mothers
29.0
Births to mothers aged 15–19
8.7%
Net reproduction rate
1.38
Boys per 100 girls at birth
107.1
Population
136,488
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, 2025
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 1.4 | 0.2% | 11 |
| 15-19 | 44.1 | 7.1% | 293 |
| 20-24 | 144.7 | 23.4% | 773 |
| 25-29 | 163.7 | 26.5% | 956 |
| 30-34 | 133.3 | 21.6% | 739 |
| 35-39 | 93.9 | 15.2% | 462 |
| 40-44 | 33.8 | 5.5% | 142 |
| 45-49 | 3.0 | 0.5% | 10 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in Kiribati by year