The total fertility rate of Less developed regions is projected at 2.26 children per woman in 2033 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (131 per 1,000 women in that age group), and the average mother would be 28.4 years old. In total, 122,772,972 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2033

Total fertility rate

2.26

Births

122,772,972

Births per 1,000 people

16.4

Mean age of mothers

28.4

Births to mothers aged 15–19

8.9%

Net reproduction rate

1.05

Boys per 100 girls at birth

104.8

Population

7,473,080,476

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, 2033

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.9	0.2%	255,697
15-19	36.7	8.1%	10,915,333
20-24	110.2	24.4%	32,002,918
25-29	130.7	28.9%	35,483,576
30-34	99.2	22.0%	25,682,761
35-39	52.9	11.7%	13,204,114
40-44	17.7	3.9%	4,416,087
45-49	3.3	0.7%	770,112
50-54	0.2	0.0%	42,275

Fertility in Less developed regions by year

Fertility in Less developed regions, 2033

Year

Country