The total fertility rate of Less developed regions is projected at 2.19 children per woman in 2042 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (125 per 1,000 women in that age group), and the average mother would be 28.6 years old. In total, 123,781,877 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2042

Total fertility rate

2.19

Births

123,781,877

Births per 1,000 people

15.5

Mean age of mothers

28.6

Births to mothers aged 15–19

7.9%

Net reproduction rate

1.02

Boys per 100 girls at birth

104.7

Population

8,003,155,078

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, 2042

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.7	0.2%	208,455
15-19	34.9	7.9%	9,757,600
20-24	102.7	23.4%	29,101,642
25-29	124.8	28.4%	36,589,423
30-34	101.0	23.0%	28,555,807
35-39	54.1	12.3%	14,282,329
40-44	18.1	4.1%	4,552,323
45-49	2.9	0.7%	695,611
50-54	0.2	0.0%	38,603

Fertility in Less developed regions by year

Fertility in Less developed regions, 2042

Year

Country