The total fertility rate of Less developed regions, excluding least developed countries is projected at 1.89 children per woman in 2055 — below the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (119 per 1,000 women in that age group), and the average mother would be 29.2 years old. In total, 74,489,196 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2055

Total fertility rate

1.89

Births

74,489,196

Births per 1,000 people

11.5

Mean age of mothers

29.2

Births to mothers aged 15–19

4.7%

Net reproduction rate

0.89

Boys per 100 girls at birth

105.0

Population

6,488,485,941

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, 2055

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.2	0.1%	41,585
15-19	18.0	4.8%	3,514,613
20-24	80.0	21.1%	15,520,704
25-29	118.6	31.3%	22,817,165
30-34	97.7	25.8%	18,898,746
35-39	48.0	12.7%	10,219,756
40-44	14.0	3.7%	3,069,482
45-49	1.8	0.5%	384,327
50-54	0.1	0.0%	22,774

Fertility in Less developed regions, excluding least developed countries by year

Fertility in Less developed regions, excluding least developed countries, 2055

Year

Country