Muslims in the United States belong to diverse religious tradtions within Islam; half identify with Sunni Islam, the largest Muslim tradition worldwide. The second largest segment of the Muslim American population — about one-fifth of the total (22%) — volunteers they are just Muslim, without any particular affiliation. An additional 16% identify with Shia Islam, which is the second largest Muslim tradition worldwide. Only 5% of U.S. Muslims identify with another Muslim tradition, adn 7% did not offer a response Read More

Russell Heimlich  is a former web developer at Pew Research Center.