Nigeria, the world’s most populous African nation, will become more populous than China and the United States by 2100 according to the Institute for Health Metrics and Evaluation (IHME) 2020 report. According to the study, the five countries with the largest population by 2100 will be: India with 1.09 billion, Nigeria with 791 million, China with 732 million, the U.S. with 336 million, and Pakistan with 248 million.
China’s population is projected to decline by 48 per cent. China’s projected decline in people is more than the entire current population of the United States.
In more than 20 countries, the population is expected to decline by more than 50 per cent including Japan, Thailand, and Spain. Last year, the Italian population shrank by almost 400,000 — roughly the size of the city of Florence, Italy or Minneapolis, MN USA — as deaths peaked, births bottomed out, and immigration slowed down. Italy doesn't count its population by color.
And even in the United States where the population is expected to continue grow, the country is expected to be majority non-White by 2045.
“More than half of the projected shrink in the global population up to 2100 will be concentrated in China, Indonesia, and Brazil, with China’s total population projected to drop by almost half to 732 million by 2100,” the report said. However, IHME reports conflict with UN reports on when the world population will peak.