Is the World Population Declining? What the Data Actually Shows

Is the World Population Declining?

The global population is still increasing, so it has not reached a decline overall. However, for many individual countries and regions, the answer is already yes. Population decline — driven by persistently low fertility rates, falling birth numbers, and in some cases net emigration — is reshaping demographics across parts of Europe, East Asia, and beyond. Whether the planet as a whole turns down this curve depends on how fast birth rates fall in the remaining high-fertility regions and how long lifespans keep rising.

Where Population Is Already Shrinking

Several nations have crossed the point where deaths outnumber births or where net migration is negative enough to reduce total population. The United Nations and national statistical agencies have documented this trend for years, and the pattern is visible across a wide band of developed and developing economies:

• Eastern Europe — countries such as Bulgaria, Romania, and Ukraine have seen persistent natural decrease combined with emigration, shrinking their populations for decades.
• East Asia — South Korea, Japan, and parts of China are now recording fewer births than deaths or negative natural growth, with aging populations accelerating the decline.
• Southern Europe — Italy, Greece, and Spain have among the lowest fertility rates in the world, with total population falling in some areas even before accounting for emigration.
• Several other countries across Central, South-East, and parts of Western Asia are also approaching or entering population decline as fertility drops below replacement level.

Why Fertility Is Falling Worldwide

In most of these places the drivers are similar and well understood: later marriage, fewer children per couple, greater access to education and contraception, higher costs of raising children, urbanization, and shifting economic incentives away from large families. As women's labor force participation rises and child-rearing becomes more expensive, fertility rates drop toward or below the replacement level of about 2.1 children per woman. In countries where this has happened for decades, the population momentum eventually reverses, and total numbers begin to fall.

The Big Picture: When Might Global Population Peak?

The United Nations projects global population will reach roughly 9.7 billion to 10 billion before 2060 and then gradually stabilize or decline, depending on how quickly fertility falls in the remaining high-growth regions. Even as the global total rises, more and more individual countries will experience population loss, meaning migration patterns, labor markets, and pension systems will be shaped by the shrinking working-age population in many parts of the world.