East Asia is home to 1.6 billion people—nearly one in five humans on the planet—and generates about a quarter of global economic output. Alongside North America and Europe, it forms one of the world’s three economic powerhouses. Yet its demographic prospects are darkening. Fewer than 10 million babies were born in the region last year, just one-thirteenth of the global total. The reason is plain: East Asia—comprising China, Japan, South Korea, North Korea, and Taiwan—now has the lowest fertility rates on Earth, pointing to a far leaner demographic future.
Demographic decline is now a global phenomenon; it is easier to list regions unaffected than the reverse. Yet East Asia remains a case apart. The so-called replacement-level fertility—the rate at which a population sustains itself—is 2.1 children per woman. Falling below that threshold is problematic, but how far below matters greatly. A country with a fertility rate of 1.8 will see each new generation shrink by about 15%—a manageable, gradual erosion. But East Asia’s average hovers near one child per woman. In 2023, South Korea hit a birthrate of 0.72—the lowest in the world—while Japan and China trail close behind. At that pace, populations halve with each generation. Sustained over a century and without immigration, this would reduce populations to under 10% of their current size. This is not slow decline; it is demographic collapse.
Just as striking as the level of decline is its speed. Japan, a partial exception, modernised earlier and has followed a demographic trajectory more akin to Europe’s: gradual and spread over a century. Not so for its neighbours. In China, South Korea, and Taiwan, fertility rates have plummeted from around six children per woman in the 1960s—levels last seen in Western Europe in the 19th century—to near or below one today. The shift took barely 50 years, compressing demographic change that took the West over a century into just a few decades.
Confucian Constraints
What explains the region’s precipitous fertility drop? One answer lies in its cultural foundations. Though East Asia’s nations are diverse, they share deep roots in ancient Chinese civilisation and the Confucian value system. This tradition prizes education and social hierarchy, fuelling both the region’s exam-based meritocracies and its economic ascent. But the same culture also carries hidden costs. Fierce academic competition and high-stakes testing have pushed families to invest heavily in private tutoring. In such a system, many opt to have fewer children—not out of indifference, but to maximise each child’s prospects in an unforgiving environment.
