Sub-Saharan Africa to Drive 1.4 Billion Surge in Global Population by 2050

Global population to reach 9.7 billion by 2050. Sub-Saharan Africa leads growth as China and Japan face major shrinkage. UN medium-fertility data analyzed.

By: AXL Media

Published: Apr 20, 2026, 10:31 AM EDT

Source: Information for this report was sourced from Visual Capitalist and the United Nations Population Division

The Epicenter of Global Demographic Expansion

The trajectory of human population growth over the next quarter-century is poised for a dramatic geographical shift, according to the United Nations’ medium-fertility projections. Between 2025 and 2050, the global population is expected to expand by roughly 1.4 billion residents, reaching an estimated total of 9.7 billion. However, this growth is far from uniform. Sub-Saharan Africa has emerged as the singular engine of this expansion, with the region’s ten fastest-growing countries all located within its borders. High fertility rates combined with declining mortality are creating a youthful demographic bulge that will redefine the continent's economic and political influence on the world stage.

Central African Nations Prepare for a Doubling Decade

Leading the global growth charts, the Democratic Republic of the Congo and the Central African Republic are projected to see their populations skyrocket by 93.4 percent and 92.6 percent, respectively. Other nations in the Sahel and Coastal West Africa, such as Niger and Angola, are tracking similar paths with projected increases exceeding 80 percent. This rapid expansion presents both a profound challenge for infrastructure and a potential "demographic dividend" if these nations can successfully invest in education and job creation for their surging youth populations. By mid-century, one in four people globally will be of African descent, marking a historic shift in the global labor force.

The Great Contraction Across Advanced Economies

In sharp contrast to the African boom, many of the world’s most established economies are entering a period of unprecedented shrinkage. China is projected to lose 11 percent of its population, approximately 200 million people, as it grapples with the long-term effects of low fertility. The situation is even more acute in East Asia and Southern Europe, where Japan, South Korea, and Italy are forecast to shrink by 14.6 percent, 12.6 percent, and 12.3 percent, respectively. These nations are facing a "post-mature" age structure where a dwindling working-age population must support an increasingly large elderly demographic, threatening long-term fiscal stability and economic productivity.