The total fertility rate of Less developed regions is projected at 2.17 children per woman in 2048 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (126 per 1,000 women in that age group), and the average mother would be 28.7 years old. In total, 122,151,684 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2048

Total fertility rate

2.17

Births

122,151,684

Births per 1,000 people

14.7

Mean age of mothers

28.7

Births to mothers aged 15–19

7.5%

Net reproduction rate

1.02

Boys per 100 girls at birth

104.6

Population

8,303,343,034

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, 2048

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.6	0.1%	183,721
15-19	32.3	7.4%	9,169,482
20-24	99.5	22.9%	27,645,541
25-29	125.7	28.9%	34,912,059
30-34	101.2	23.3%	29,388,911
35-39	54.3	12.5%	15,369,729
40-44	18.0	4.1%	4,746,719
45-49	2.8	0.6%	697,812
50-54	0.2	0.0%	37,647

Fertility in Less developed regions by year

Fertility in Less developed regions, 2048

Year

Country