North America http://www.muslimpopulation.com/America/ South America MuslimPopulation.com less than 3 percent of the U.S. population being Muslim Muslim population is roughly 2% http://www.muslimpopulation.com/America/ millions of loyal American citizens http://www.muslimpopulation.com/America/ less than 3 percent of the U.S. population being Muslim North America http://www.muslimpopulation.com/America/ about 2% about 2% Muslim Population Muslim websites claim 2%) a 2011 study Muslim websites claim 2%) http://www.muslimpopulation.com/America/ South America Estimates less than 3 percent of the U.S. population being Muslim roughly 2%