Islam is the third most widely professed religion in New York City, after Christianity and Judaism. A 2018 study estimated that there are over 750,000 Muslims living in New York City, the largest population of Muslims by city in the United States. Approximately 9% of New York City residents are Muslim, constituting 22.3% of American Muslims, with 1.5 million Muslims in the greater New York metropolitan area, representing the largest metropolitan Muslim population in the Western Hemisphere—and the most ethnically diverse Muslim population of any city in the world.