As global population increases from 7.6 billion in 2017 to a projected 9.8 billion in 2050, half that growth is expected to be concentrated in just nine countries (in order of expected contribution):
- Democratic Republic of the Congo
- United States of America
One reason the U.S. is defying global trends: more open immigration policies. Over the past two decades, immigrants are responsible for most of the U.S.’s net population growth, a trend projected to continue through 2065. Not so in Europe.
“International migration at or around current levels will be insufficient to compensate fully for the expected loss of population tied to low levels of fertility, especially in the European region,” observes the United Nations. Still, the report adds, “the movement of people between countries can help attenuate some of the adverse consequences of population aging.”