The U.S. religious landscape is already in the midst of some dramatic changes when it comes to the growth or decline of people with certain religious identities. And while it is impossible to predict exactly how that landscape will shift in the future, some key demographic factors — particularly age — can provide a clue as to how things might unfold in the coming decades.
Pew Research Center estimates that there were about 3.3 million Muslims of all ages living in the United States in 2015. This means that Muslims made up about 1% of the total U.S. population.