The total fertility rate of Least developed countries is projected at 3.05 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 (152 per 1,000 women in that age group), and the average mother would be 28.7 years old. In total, 41,629,678 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2042

Total fertility rate

3.05

Births

41,629,678

Births per 1,000 people

24.3

Mean age of mothers

28.7

Births to mothers aged 15–19

13.2%

Net reproduction rate

1.41

Boys per 100 girls at birth

103.8

Population

1,710,330,333

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	1.6	0.3%	146,652
15-19	65.2	10.7%	5,505,801
20-24	142.8	23.4%	10,987,567
25-29	152.0	24.9%	10,459,579
30-34	126.3	20.7%	7,897,255
35-39	80.4	13.2%	4,552,328
40-44	34.8	5.7%	1,740,160
45-49	7.5	1.2%	326,619
50-54	0.4	0.1%	13,688

Fertility in Least developed countries by year

Fertility in Least developed countries, 2042

Year

Country