Top Ten Organized Religions of the World, 2005

Statistics of the world's religions are only very rough approximations. Aside from Christianity, few religions, if any, attempt to keep statistical records; and even Protestants and Catholics employ different methods of counting members.

Religion Members Percentage
Christianity 2.1 billion 33.0%
Islam 1.5 billion 21
Hinduism 900 million 14
Buddhism 376 million 6
Sikhism 23 million 0.36
Judaism 14 million 0.22
Bahaism 7 million 0.1
Confucianism 6.3 million 0.1
Jainism 4.2 million 0.1
Shintoism 4 million 0.0
NOTES: As of 2005. This list includes only organized religions and excludes more loosely defined groups such as Chinese or African traditional religions.
Source: Encyclopaedia Britannica,

The Major Faiths (concise table) Religion Self-Described Religious Identification Among American Adults