I love maps. My office walls are covered in them. And, the Pew Forum on Religion and Public Life has a whole mess o' new maps, charts, and graphs related to American religion. For a quick taste, here is a portrait of American Evangelical churches.
There is more here that you probably ever wanted to know about religious demographics in America. You can sort by tradition, gender, income, race, region, and on and on starting on the main page.
My early favorite for weirdest question in the survey: "How often do you receive a definite answer to a specific prayer request -- would you say at least once a week, once or twice a month, several times a year, seldom, or never?"
And, Jehovah's Witness members took home the Golden Clasped Hands Award for praying the most. A whopping 89% said that they "pray daily." Mormons and historically black churches took silver and bronze. Evangelicals finished a disappointing fourth.
Seriously, this is really interesting data full of thought-provoking pieces, cultural insight, and humor. Give it a look.