Society · Facts & sources
6 sourced facts about Muslims worldwide and in the United States — population, growth and demographics, each with the context behind the number. 4 more are in today's round and appear here after it closes.
AnswerAsia-Pacific (about 1.2 billion)
Countries like Indonesia and Pakistan give the Asia-Pacific region the world's largest Muslim populations.
Source: Pew Research Center (2020) pewresearch.org
Answerabout 3.45 million
That estimate includes Muslims of all ages living across the country.
Source: Pew Research Center (2017) pewresearch.org
Answerabout 1.1%
Despite being a small share of the population, the US Muslim community has grown steadily each year.
Source: Pew Research Center (2017) pewresearch.org
Answerabout 59%
Immigration has played a major role in shaping the US Muslim community, alongside a younger, US-born generation.
Source: Pew Research Center (2025) pewresearch.org
Answerabout 347 million more
Meanwhile Buddhists were the only major group to see an absolute decline over the same decade.
Source: Pew Research Center (2020) pewresearch.org
Answerabout 2.1% (8.1 million people)
Pew projects Muslims will surpass Jews as the second-largest US religious group after Christians by 2040.
Source: Pew Research Center (2018) pewresearch.org