A recent Pew Research Center survey of more than 38,000 Muslims around the world shows widespread observance of Ramadan. In the 39 countries and territories surveyed, a median of 93% say they fast during the holy month. Fasting is the second-most observed of the Five Pillars, behind only belief in God and the Prophet Muhammad (median of 97%).
By comparison, a median of 77% of Muslims in those 39 countries say they give zakat (an annual donation of a portion of one’s wealth to the needy). And a global median of 63% of Muslims surveyed say they perform five salat (prayers) a day. A median of just 9% of Muslims say they have already completed the hajj (the pilgrimage to Mecca), although this once-in-a-lifetime obligation applies only to those who are financially and physically capable.
Pew Research has not asked American Muslims whether they fast during Ramadan, but a 2007 survey found that three-quarters (77%) of Muslim Americans say fasting during Ramadan is very important to them.