Births per 1,000 women, by age of mother

Fertility in Northern America, 1957

Northern America
1957
Total fertility rate: 3.71
Total fertility rate, 1950–2100 · click to pick a year

Year

-5 -1   1957  +1 +5

Country

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

The total fertility rate of Northern America was 3.71 children per woman in 1957 — above the replacement level of about 2.1. Births were most frequent among women aged 20-24 (252 per 1,000 women in that age group), and the average mother was 26.6 years old. In total, 4,738,995 babies were born. Source: United Nations, World Population Prospects 2024.

Total fertility rate
3.71
Births
4,738,995
Births per 1,000 people
25.2
Mean age of mothers
26.6
Births to mothers aged 15–19
12.0%
Net reproduction rate
1.74
Boys per 100 girls at birth
105.1
Population
188,214,454
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.
Mother's ageBirths per 1,000 womenShare of total fertilityBirths
10-141.10.1%8,533
15-1987.011.8%568,837
20-24252.234.1%1,519,104
25-29199.427.0%1,277,612
30-34119.016.1%827,133
35-3962.18.4%423,554
40-4417.22.3%107,740
45-491.10.1%6,163
50-540.10.0%308