The report likewise says that Nigeria will supplant the US as the world's third most crowded nation by around 2050.
Africa is required to represent more than 50% of the world's populace development throughout the following 35 years.
The present world populace of 7.3 billion will achieve 9.7 billion in 2050 and 11.2 billion in 2100, it predicts.
The new projection has India overwhelming China's populace six years sooner than already anticipated.
The reports says 50% of the world's populace development somewhere around 2015 and 2050 is relied upon to be amassed in nine nations: India, Nigeria, Pakistan, the Democratic Republic of Congo, Ethiopia, Tanzania, the United States, Indonesia and Uganda.
The populaces of 28 African nations are anticipated to dramatically multiply, and by 2100, 10 African nations are anticipated to have expanded by no less than a variable of five.
"The convergance of populace development in the poorest nations exhibits its own arrangement of difficulties, making it more hard to annihilate neediness and imbalance, to battle appetite and hunger," said John Wilmoth, Director of the UN's Population Division.
