The region of South-central Asia includes countries that are diverse in terms of their size and religious makeup. According to the Center for the Study of Global Christianity, India has the largest number of Christians (over 60 million), followed by Kazakhstan, Pakistan, Sri Lanka, and Nepal (all with Christian populations over 1 million). The smallest Christian populations in the region are found in the island nation of the Maldives and in Afghanistan. Hindus are the largest religious group in the region, followed by Muslims. Christians make up about 4% of the regional population.