The total fertility rate of Less developed regions is projected at 2.18 children per woman in 2046 — 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 28.7 years old. In total, 123,002,308 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2046

Total fertility rate

2.18

Births

123,002,308

Births per 1,000 people

15.0

Mean age of mothers

28.7

Births to mothers aged 15–19

7.6%

Net reproduction rate

1.02

Boys per 100 girls at birth

104.6

Population

8,209,017,921

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, 2046

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.7	0.2%	191,573
15-19	33.1	7.6%	9,363,534
20-24	101.3	23.2%	28,009,020
25-29	125.0	28.6%	35,635,023
30-34	101.1	23.2%	29,371,269
35-39	54.3	12.4%	15,038,142
40-44	18.0	4.1%	4,660,986
45-49	2.8	0.6%	694,638
50-54	0.2	0.0%	38,033

Fertility in Less developed regions by year

Fertility in Less developed regions, 2046

Year

Country