The total fertility rate of Less developed regions is projected at 2.22 children per woman in 2037 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (128 per 1,000 women in that age group), and the average mother would be 28.6 years old. In total, 123,553,947 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2037

Total fertility rate

2.22

Births

123,553,947

Births per 1,000 people

16.0

Mean age of mothers

28.6

Births to mothers aged 15–19

8.4%

Net reproduction rate

1.03

Boys per 100 girls at birth

104.7

Population

7,718,623,832

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, 2037

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.8	0.2%	231,977
15-19	36.1	8.1%	10,331,344
20-24	105.0	23.6%	31,004,514
25-29	128.0	28.8%	36,467,381
30-34	100.2	22.5%	26,679,378
35-39	53.4	12.0%	13,610,030
40-44	18.1	4.1%	4,446,829
45-49	3.0	0.7%	741,542
50-54	0.2	0.0%	40,871

Fertility in Less developed regions by year

Fertility in Less developed regions, 2037

Year

Country