Religious Affiliation

Four Largest Folk Religions

• Christianity: 2.4 billion people
• Islam: 1.9 billion people
• Hinduism: 1.2 billion people
• Buddhism: 507 million
• These four religions encompass 78% of the world's population.

Other Religions

• This category represents 6% of the world population, though the count is hard to estimate.
• Includes Chinese traditional, primal indigenous, and African traditional religions.

Unaffiliated

• 16% of the world's population considers themselves unaffiliated with any religion.
  • Atheism: Disbelief in any all-powerful being.
  • Agnosticism: Belief that the existence of an all-knowing being cannot be proven.

Other Religions (Specific Denominations)

• Jewish, Sikhism, and Spiritism
• Follower counts range:
  • 14-23 million: Bahai, Cao Dai, Jainism, Shinto, Tenrikyo, and Zoroastrianism
  • 2-10 million followers