World Population 2024 By Religion. Last collected in the year 2011, the population, at that point, stood at a reported 176,745,364. According to a demographic study based on analysis of more than 3,000 censuses, surveys, and population registers, christianity remains the world’s largest religion, with approximately 2.2 billion followers, comprising 32 percent of the world’s.

See the percentage, number, and geographical distribution of christians, muslims, hindus, buddhists, and other religions. The united kingdom is also a country with a large number of the sikh population.