The total fertility rate of Least developed countries is projected at 3.43 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 (167 per 1,000 women in that age group), and the average mother would be 28.6 years old. In total, 39,514,818 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2033

Total fertility rate

3.43

Births

39,514,818

Births per 1,000 people

27.3

Mean age of mothers

28.6

Births to mothers aged 15–19

14.0%

Net reproduction rate

1.56

Boys per 100 girls at birth

103.8

Population

1,445,155,864

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	2.1	0.3%	167,652
15-19	76.6	11.2%	5,545,442
20-24	162.4	23.7%	10,628,173
25-29	166.6	24.3%	9,877,563
30-34	137.4	20.0%	7,233,011
35-39	89.9	13.1%	4,154,395
40-44	40.9	6.0%	1,588,321
45-49	9.2	1.3%	307,024
50-54	0.5	0.1%	13,220

Fertility in Least developed countries by year

Fertility in Least developed countries, 2033

Year

Country