Births per 1,000 women, by age of mother

Fertility in United States of America, 1978

United States of America
1978
Total fertility rate: 1.80
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 United States of America was 1.80 children per woman in 1978 — below the replacement level of about 2.1. Births were most frequent among women aged 20-24 (113 per 1,000 women in that age group), and the average mother was 26.0 years old. In total, 3,516,171 babies were born. Source: United Nations, World Population Prospects 2024.

Total fertility rate
1.80
Births
3,516,171
Births per 1,000 people
15.6
Mean age of mothers
26.0
Births to mothers aged 15–19
16.0%
Net reproduction rate
0.86
Boys per 100 girls at birth
105.3
Population
225,396,096
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
10-141.60.4%14,751
15-1953.114.6%563,665
20-24112.531.0%1,192,821
25-29112.230.9%1,078,684
30-3459.916.5%505,073
35-3919.95.5%135,993
40-444.01.1%23,747
45-490.20.1%1,432
50-540.00.0%0