Births per 1,000 women, by age of mother

Fertility in United States of America, 1999

United States of America
1999
Total fertility rate: 1.99
Total fertility rate, 1950–2100 · click to pick a year

Year

-5 -1   1999  +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 1.99 children per woman in 1999 — below the replacement level of about 2.1. Births were most frequent among women aged 25-29 (110 per 1,000 women in that age group), and the average mother was 27.2 years old. In total, 3,872,873 babies were born. Source: United Nations, World Population Prospects 2024.

Total fertility rate
1.99
Births
3,872,873
Births per 1,000 people
13.9
Mean age of mothers
27.2
Births to mothers aged 15–19
12.1%
Net reproduction rate
0.96
Boys per 100 girls at birth
104.9
Population
278,785,484
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
10-141.20.3%11,500
15-1948.712.2%466,914
20-24106.726.8%968,159
25-29110.127.7%1,049,345
30-3485.421.5%864,769
35-3937.69.4%424,854
40-447.51.9%83,348
45-490.40.1%3,930
50-540.00.0%53