[RebelBanker]

Reading the detailed citation from the folks at adherents.com, they are quite willing to accept a number twice as high as reported - just under 3 million or 1% of the population. Muzzies are highly concentrated in places like Dearborn, but all but nonexistent in the smaller cities and towns in much of the heartland. Just on an intuitive level, there are lots of small towns all over the country that have a couple of hundred people, almost all of whom will self-identify as Christians. That averages out the high muzzie concentrations in certain cities.

[Fred Nerks]

http://www.danielpipes.org/blog/1

looks to me as if nobody really knows.