The total fertility rate of Least developed countries is projected at 3.29 children per woman in 2036 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (161 per 1,000 women in that age group), and the average mother would be 28.6 years old. In total, 40,185,076 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2036

Total fertility rate

3.29

Births

40,185,076

Births per 1,000 people

26.2

Mean age of mothers

28.6

Births to mothers aged 15–19

13.8%

Net reproduction rate

1.50

Boys per 100 girls at birth

103.8

Population

1,533,093,808

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, 2036

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	1.9	0.3%	160,657
15-19	72.4	11.0%	5,544,498
20-24	155.6	23.6%	10,692,277
25-29	161.3	24.5%	10,057,148
30-34	132.9	20.2%	7,475,408
35-39	86.3	13.1%	4,279,467
40-44	38.5	5.9%	1,651,285
45-49	8.7	1.3%	310,893
50-54	0.4	0.1%	13,412

Fertility in Least developed countries by year

Fertility in Least developed countries, 2036

Year

Country