India has become the world's most populated country with 1,428.6 million people, surpassing China, which is the second most populous with 1,425.7 million people. China is followed by the US (340 million), Indonesia (277.5 million), Pakistan (240.5 million), Nigeria (223.8 million), Brazil (216.4 million), Bangladesh (173 million), Russia (144.4 million) and Mexico (128.5 million).