World Religion Statistics 2023. As of 2023, christianity was by far the world’s largest religion, with an estimated 2.38 billion adherents, nearly a third (31.1%) of all 7.66 billion people on earth. The religious are growing 2.5.

• 74% of people globally believe we have a soul and 71% believe in god; The world religion database (wrd), hosted at boston university’s institute on culture, religion and world affairs (cura), contains detailed statistics on religious affiliation for every country.