China is the world’s most populous country, with a
population exceeding 1.4 billion, slightly ahead of
India .
World 7.888 billion (2021)
China 1.412 billion (2021)
India 1.408 billion (2021)
United States 331.9 million (2021)
Actually, many experts think India has already passed them. India has delayed their most recent census, due to Covid. China's population is Declining, and will continue to do so, dramatically, for the next decade. They're now seeing the impact of their "one-child" policy.