Religion plays an fundamental role in society. Despite individual views and most states' agnosticism, religion defines many aspects of life, culture, history, and ideas. From widespread traditions to ethical stances, religion has an undoubted presence in our lives. Nevertheless, religions are given a different place and status from country to country. For instance, in some regions of the world, religious and governmental decisions go hand in hand, whereas in other countries, politics is not influenced by religious beliefs.

In terms of number of adherents, Christianity is the largest religion in the world. Over two billion people on earth identify themselves as Christian, while more than 1.5 billion individuals are Muslim, the second largest religion. Hinduism, Buddhism, Sikhism, and Judaism follow as the world's most popular religions. Nevertheless, when looking at the different groups among the global population, a large share of people do not belong to any religion.

Largest Religion Worldwide
Fastest growing major religion
Country with the most people believing in God

The world is becoming more religious, not less

Religion in the 21st Century

Total worldwide adherents of largest world religions and faiths in 2010 and projected adherents in 2050

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Further details: Visit original statistic Total worldwide adherents of largest world religions and faiths in 2010 and projected adherents in 2050

While governments around the world have largely come to embrace secularism and a separation between church and state, with some notable exceptions such as Saudi Arabia and Iran, the number of religious people on the planet is set to increase in the coming century. This is largely because of a growing number of Christians and Muslims in regions such as the Arabic-speaking world and Sub-Saharan Africa which have high fertility rates, while Buddhists are the only group predicted to fall in number.

Religion in India
Christianity in the U.S.

State of the industry

  • Religion in France
  • Minority religions in Spain
  • Global halal market
  • Religion and religiosity in India

Industry Definition

The Religion category includes data on religious adherence, attendence, and religious minorities as well as opinions on different aspects of religion. For instance, data shows how often people attend religious services, which religion they belong to, and how certain religious traditions are celebrated, from Christmas to Ramadan. Moreover, studies and statistics can be found on various forms of prejudice and hostility towards religious groups, such as Anti-Semitism, or discrimination against religious minorities. Additionally, this branch shows the results of several surveys on the perception of religions, rites, and ethical issues.


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