Fun religion maps

A new study, by David T. Olson, "The American Church", includes some fun county-by-county maps showing the percentage of people in each county that attended a particular "kind" of church on a particular weekend.  Here's the Catholic map (dark colors in the Northeast, upper Midwest, Louisiana, and the Mexican border areas; negligible in the South).  Here's the "Mainline" map, and here is the "evangelical" map. The study includes "12 fascinating facts about what is really happening in the American church."  One such fact is said to be that "the percentage of people that attend a Christian church each weekend is far below what pollsters report."  Also, this map suggests that Oregon is not as much of an "unchurched" outlier as one sometimes hears.

Rick