Most developed countries will see population declines over the next 50 years, but US population will increase

The populations of many developed nations are projected to continue decreasing over the next 50 years, including Germany, to 74.74 million by 2070, Japan to 74.96 million, Russia to 126.14 million. But the US population is projected to rise gradually to about 433.9 million, while Nigeria, which is a fast-developing nation, is projected to soar from 206 million in 2020 to 732.9 million by 2070.