Births per 1,000 women, by age of mother

Fertility in Northern America, 1978

Northern America
1978
Total fertility rate: 1.79
Total fertility rate, 1950–2100 · click to pick a year

Year

-5 -1   1978  +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 1.79 children per woman in 1978 — below the replacement level of about 2.1. Births were most frequent among women aged 25-29 (113 per 1,000 women in that age group), and the average mother was 26.0 years old. In total, 3,870,984 babies were born. Source: United Nations, World Population Prospects 2024.

Total fertility rate
1.79
Births
3,870,984
Births per 1,000 people
15.5
Mean age of mothers
26.0
Births to mothers aged 15–19
15.4%
Net reproduction rate
0.85
Boys per 100 girls at birth
105.3
Population
249,484,155
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
10-141.50.4%15,206
15-1950.614.0%597,865
20-24111.130.8%1,306,553
25-29113.231.4%1,207,253
30-3460.516.8%566,551
35-3919.85.5%149,998
40-444.01.1%25,957
45-490.20.1%1,591
50-540.00.0%0