The site has many of the Religion resident living in America according to percentage.
They are Christian, Presbyterian, Catholic, Mormon and even Muslim.
Quite useful, I felt, because if you plan to go or live in that certain area for a long duration, it is good to be aware of your neighbourhood.This is also specially useful for those rac**t, who cannot stand people of other faith.
I would very much like to suggest Singapore to have map like this, not only it is a nifty information for urban development planning, but imagine how useful it will be to have such intelligent before ah... let say, a Political campaign.
Not to mention others. (Link)
Tags: America Map Religion Singapore