The total fertility rate of Less developed regions is projected at 2.31 children per woman in 2028 — above the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (133 per 1,000 women in that age group), and the average mother would be 28.2 years old. In total, 121,552,074 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2028

Total fertility rate

2.31

Births

121,552,074

Births per 1,000 people

17.0

Mean age of mothers

28.2

Births to mothers aged 15–19

9.4%

Net reproduction rate

1.07

Boys per 100 girls at birth

105.1

Population

7,147,750,784

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, 2028

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	1.0	0.2%	295,291
15-19	39.2	8.5%	11,478,516
20-24	118.2	25.6%	32,357,476
25-29	133.3	28.8%	34,777,735
30-34	97.7	21.1%	24,604,264
35-39	51.4	11.1%	12,944,722
40-44	18.0	3.9%	4,298,740
45-49	3.6	0.8%	753,137
50-54	0.2	0.0%	42,157

Fertility in Less developed regions by year

Fertility in Less developed regions, 2028

Year

Country