World Population Prospects 2024 is the twenty-eighth edition of the official United Nations population estimates and projections.
The world’s population is expected to continue growing over the coming 50-60 years, reaching a peak of around 10.3 billion people in the mid-2080s, up from 8.2 billion in 2024.
After peaking, the global population is projected to start declining gradually, falling to 10.2 billion people by the end of the century.
India's population in 2024 is projected at 1.45 billion and this will peak to 1.69 billion in 2054.
India’s population is projected to peak in the early 2060s at about 1.7 billion and then decline by 12%.
But India will remain the world’s most populous country throughout the century.
India, which surpassed China as the world's most populous nation last year, will continue to hold that position through 2100.
The report said that China's population, currently 1.41 billion in 2024, will fall to 1.21 billion in 2054 and further decline to 633 million by 2100.
It will likely experience the largest absolute population loss between 2024 and 2054 (204 million), followed by Japan (21 million) and Russia (10 million).