That would exactly describe our little corner of central PA. Small, rural town with no blacks, hardly anybody that isn't related to everybody else ;) And yet there's a mosque in an old church, and some Middle Eastern folks who rarely go outdoors, never mind mingle.
I think it probably describes a lot of places where this same thing is going on, all over the country. Having these mosques quietly popping up in out of the way places reminds me of "Invasion of the Body Snatchers," if you remember that old classic!