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News / Nation & World

World population forecasted to peak at 10.3 billion in 2080s

Numbers a ‘major shift’ from decade-old projections

By EDITH M. LEDERER, Associated Press
Published: July 12, 2024, 5:36pm

UNITED NATIONS — The world’s population is expected to grow by more than 2 billion people in the next decades and peak in the 2080s at around 10.3 billion, a major shift from a decade ago, a new report by the United Nations said Thursday.

The report — released on World Population Day — says the global population is then expected to decline to around 10.2 billion by the end of the century.

John Wilmoth, head of the U.N. Population Division which prepared the report, said the probability that the world’s population will peak within the current century is quite high – about 80 percent.

“This is a major change compared to the United Nations projections from a decade earlier when the estimated probability the global population would reach a maximum, and thus the growth would come to an end during the 21st century, was around 30 percent,” he said.

Bucknell University mathematics orofessor Tom Cassidy told AP that newly published research in the journal Demography that he co-authored also calculates that population is likely to peak before the end of the century.

According to the World Population Prospects 2024 report, the earlier-than-anticipated population peak is due to several factors, including lower fertility levels in some of the world’s largest countries, especially China, whose population is projected to drop dramatically from 1.4 billion in 2024 to 633 million in 2100.

Globally, women are having an average of one fewer child than they did in 1990, the report said, and in more than half of all countries and territories, the average number of live births per woman is below 2.1. That’s the level needed for a country’s population to maintain its size without migration.

Nearly 20 percent of the world — including China, Italy, South Korea and Spain — have “ultra-low” fertility, with women having fewer than 1.4 live births, the report said. In China, the current number is just around one birth per woman, Wilmoth said.

U.N. Assistant Secretary-General for Economic Development Navid Hanif told a press conference launching the report that the expectation the world’s population in 2100 will be lower than anticipated “represents a major shift compared to a decade ago, with important policy implications for the sustainability of our planet.”

According to the report, in 2024 population has already peaked in 63 countries and territories, including China, Germany, Japan and Russia. In this group, the total population is projected to decline by 14 percent over the next 30 years.

In another 48 countries and territories — including Brazil, Iran, Turkey and Vietnam — the population is projected to peak between 2025 and 2054, the report said.

For the remaining 126 countries and territories, including the United States, India, Indonesia, Nigeria and Pakistan, the population is expected to increase through 2054, “and, potentially, to peak in the second half of the century or later.”

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For nine of those countries — including Angola, Central African Republic, Congo, Nigeria and Somalia — the U.N. is projecting very rapid growth, with their populations doubling between 2024 and 2054.

While these differences are striking, Wilmoth said, “it’s important to understand that all populations are following a similar path.”’

“The differences stem from countries being at different stages of the demographic transition towards longer lives and smaller families,” he said.

Wilmoth cited additional key findings in the report: Following the COVID-19 pandemic global life expectancy is rising again. By 2080, people aged 65 and older will outnumber children under 18 years of age. In some countries, immigration will be “the main driver of future growth.” And gender equality and women’s empowerment can help counter population growth.

The world’s population has grown dramatically in the last 75 years, from an estimated 2.6 billion in 1950 to 8 billion in November 2022. Since then, it has increased by roughly 2.5 percent to 8.2 billion.

Kathleen Mogelgaard, president and CEO of the Washington-based Population Institute, said Thursday’s estimates underscore “an increasing demographic divide around the world.”

While it identified more than 100 countries and territories whose populations have already peaked or will do so in the next 30 years, she said, it shows even more where population will keep growing, many of them among the world’s poorest nations.

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