The total fertility rate of Less developed regions, excluding least developed countries is projected at 1.99 children per woman in 2027 — below the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (122 per 1,000 women in that age group), and the average mother would be 28.3 years old. In total, 83,468,441 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2027

Total fertility rate

1.99

Births

83,468,441

Births per 1,000 people

14.4

Mean age of mothers

28.3

Births to mothers aged 15–19

7.1%

Net reproduction rate

0.92

Boys per 100 girls at birth

105.8

Population

5,808,737,507

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, 2027

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.5	0.1%	118,805
15-19	26.6	6.7%	5,963,792
20-24	104.1	26.1%	22,041,431
25-29	122.2	30.7%	25,297,050
30-34	86.2	21.6%	17,726,188
35-39	42.4	10.6%	9,086,265
40-44	13.7	3.4%	2,757,464
45-49	2.5	0.6%	447,816
50-54	0.2	0.0%	29,594

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

Fertility in Less developed regions, excluding least developed countries, 2027

Year

Country