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.