USA- 280,000,000 people in 2000 census, approx. 2% Jewish = roughly 5,600,000. Moslem est. numbers in North America in 2000, 5,000,000 (includes Canada, Mexico); numbers growing because of conditions in Africa and the Middle East. Protestant- 61%; Roman Catholic 25%. (There are 5,200,000 Church of Latter-Day Saints (Mormon)).
Th latest Britannica estimates ("very rough approximations") that, for the World, 1.9 billion profess Christianity and 1.1 billion profess Islam. There are:
Hindus- 781 million
Buddhists- 324 million
Sikhs- 19 million
Judaism- 14 million
Baha'ism- 6.1 million
Confucianism- 5.3 million
Jainism- 4.9 million
Shintoism - 2.8 million
Chinese and African traditional religions excluded from estimates. Note: The Chinese are largely excluded, since the country is officially atheist. Most have some kind of traditional religion.