Re:The second-largest religion in each state
by bunderbunder on Thursday June 05, 2014 @06:28PM
(#7855038)
I'm going to guess they didn't. Most nationwide surveys generally indicate that "no religion" outnumbers all the other minority religions combined, so if they had the maps would presumably have been a lot more boring.
It doesn't answer the question, but Wikipedia has some interesting information on "irreligion" in the US.
http://en.wikipedia.org/wiki/Irreligion_in_the_United_States