Islam in the United States

Islam is the third-largest religion in the United States (1.34%) after Christianity (67%) and Judaism (2.4%). The 2020 United States Religion Census estimates that there are about 4,453,908 Muslim Americans of all ages living in the United States in 2020, making up 1.34% of the total U.S. population. In 2017, twenty states, mostly in the South and Midwest, reported Islam to be the largest non-Christian religion.

The first Muslims to arrive in America were enslaved people from West Africa (such as Omar ibn Said and Ayuba Suleiman Diallo). During the Atlantic slave trade, an estimated 10 to 40 percent of the slaves brought to colonial America from Africa were Muslims, however Islam was suppressed on plantations and the majority were forced to convert to Christianity. Nearly all enslaved Muslims and their descendants converted to Christianity during the 18th and 19th centuries, though the Black power movement of the 20th century would later influence the revival of Islam among descendants of slaves. Prior to the late 19th century, the vast majority of documented Muslims in North America were merchants, travelers, and sailors.

From the 1880s to 1914, several thousand Muslims immigrated to the United States from the former territories of the Ottoman Empire and British India. The Muslim population of the U.S. increased dramatically in the second half of the 20th century due to the passage of the Immigration and Nationality Act of 1965, which abolished previous immigration quotas. About 72 percent of American Muslims are "second generation".

In 2005, more people from Muslim-majority countries became legal permanent United States residents—nearly 96,000—than there had been in any other year in the previous two decades. In 2009, more than 115,000 Muslims became legal residents of the United States.

American Muslims come from various backgrounds and, according to a 2009 Gallup poll, are one of the most racially diverse religious groups in the United States. According to a 2017 study done by the Institute for Social Policy, "American Muslims are the only faith community surveyed with no majority race, with 26 percent white, 18 percent Asian, 18 percent Arab, 9 percent black, 7 percent mixed race, and 5 percent Hispanic". The Pew Research Center estimates about 73% of American Muslims are Sunni and 16% are Shia; the remainder identify with neither group, and include movements such as the Nation of Islam, Ahmadiyya, or non-denominational Muslims. Conversion to Islam in large cities and in prisons have also contributed to its growth over the years.