Christianity is the largest religion in the world. According to data from 2015, more than 2.3 billion people practice some form of Christianity. This means that about one-third of the world’s total population follows this religion.
Christianity has several denominations, but the largest is the Catholic Church. There are about 1.2 billion Catholics globally. Other large denominations include Protestantism and the Eastern Orthodox Church.
In Europe, Russia, North America, South America, parts of Africa, East Timor, the Philippines, and Oceania, Christianity is the predominant religion. However, Christianity is also practiced on a smaller scale in regions, including the Middle East and Indonesia. In 15 nations, Christianity has been deemed the state religion. These nations include England, Greece, and Iceland. Nations with high numbers of Christians or members of any religion but no official state religion and where religion does not play a role in policymaking are secular countries.
In terms of how many Christians reside in a nation, the United States leads the pack with approximately 230 million. Brazil also has a high number of Christians – over 180 million, to be exact. Other nations that have a large number of Christians include:
- Democratic Republic of Congo
- South Africa
In terms of percentages of Christians compared to a nation’s population as a whole, East Timor comes out on top. Of its over 1.1 million residents, approximately 99.1% are Christian. In American Samoa, over 98% of its 70,000 residents practice Christianity. Other nations with high percentages of Christians concerning total population include: