The percentage of U.S. Catholics with a strong identification with the Catholic Church was as low in 2012 as it has ever been in General Social Surveys. During the same period, the percentage of Protestants who consider themselves strong members of their faith has been rising.
A country-by-country analysis of data from more than 2,500 censuses, surveys and population registers finds that 84% of adults and children around the globe are religiously affiliated. The study also finds that the median age of two major groups – Muslims (23 years) and Hindus (26) – is younger than the world’s overall population (28), while Jews have the highest median age (36).
The number of Americans who do not identify with any religion continues to grow at a rapid pace. One-fifth of the U.S. public – and a third of adults under 30 – are religiously unaffiliated today, the highest percentages ever in Pew Research Center polling.
The world’s Muslims are united in their belief in God and the Prophet Muhammad and are bound together by such religious practices as fasting during Ramadan and almsgiving to assist the needy. But they have widely differing views about other aspects of their faith, including how important religion is to their lives, who counts as a Muslim and what practices are acceptable in Islam.
This study focuses on the religious affiliation of international migrants, examining patterns of migration among seven major groups: Christians, Muslims, Hindus, Buddhists, Jews, adherents of other religions and the religiously unaffiliated.
A comprehensive demographic study of more than 200 countries finds that there are 1.57 billion Muslims of all ages living in the world today, representing 23% of an estimated 2009 world population of 6.8 billion.
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