In two months, India is projected to become the world's most populous country with over 1.4 billion people. "In the absence of latest census data, the estimations are based on data that is one decade old and is likely to provide estimates that are far from reality," Sharma said. The office of the Registrar General of India, which is responsible for the census, did not respond to a request for comment. In two months, India is projected to become the world's most populous country with over 1.4 billion people. "In the absence of latest census data, the estimations are based on data that is one decade old and is likely to provide estimates that are far from reality," Sharma said.