World Population To Reach 9.9 Billion by 2050
AKP Phnom Penh, August 28, 2018 —
The world population will reach 9.9 billion by 2050, up 2.3 billion or 29 percent from an estimated 7.6 billion people now, according to projections by Population Reference Bureau (PRB).
This year’s forecast edition provides the latest data on 26 key population, health, and environment indicators for the world, the world’s regions, and more than 200 countries and territories, including Cambodia, said PRB in a press release.
Based on the projections, India will become the world’s most populous country with 1,680 million people, followed by China with 1,340 million, Nigeria with 411 million, the Unites States with 390 million, and Indonesia 320 million, it pointed out.
The population of 26 countries, nearly all in Africa, will at least double. Niger in West Africa will see its population nearly triple.
A total of 38 countries will have smaller populations in 2050 than in 2018. China will register the largest numerical population decrease―about 50 million―followed by Japan at 25 million and Russia at 9.4 million. Romania will see the largest percentage decline in population (23 percent).
As part of the analyses for this Data Sheet, PRB demographers grouped countries into five age dependency categories to better illustrate their demographic challenges and opportunities. The categories integrated two factors: the child dependency ratio—the ratio of children (those under age 15) to the working-age population (ages 15 to 64); and the old-age dependency ratio—the ratio of older adults (ages 65 and older) to the working-age population.
Many countries in the world are experiencing—and will continue to experience—population aging, with steady increases in the number of older adults, both in absolute terms and as a percentage of the total population. This trend poses challenges for countries in balancing the pension, health, and other benefits that older adults typically receive with investments in the well-being of younger generations.
By Khan Sophirom