Fertility in Japan, 1951
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1951
Total fertility rate: 3.23
The total fertility rate of Japan was 3.23 children per woman in 1951 — above the replacement level of about 2.1. Births were most frequent among women aged 25-29 (216 per 1,000 women in that age group), and the average mother was 29.6 years old. In total, 2,249,284 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1951
Total fertility rate
3.23
Births
2,249,284
Births per 1,000 people
25.6
Mean age of mothers
29.6
Births to mothers aged 15–19
2.1%
Net reproduction rate
1.36
Boys per 100 girls at birth
105.0
Population
87,849,926
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, 1951
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.0 | 0.0% | 31 |
| 15-19 | 10.4 | 1.6% | 47,098 |
| 20-24 | 138.6 | 21.5% | 581,975 |
| 25-29 | 216.4 | 33.5% | 801,182 |
| 30-34 | 161.2 | 25.0% | 492,714 |
| 35-39 | 89.3 | 13.8% | 250,718 |
| 40-44 | 29.4 | 4.6% | 74,303 |
| 45-49 | 0.6 | 0.1% | 1,262 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in Japan by year