David noticed this article by Dan Mitchell reporting the well-known fact that people in richer countries tend to be less religious. What about states in the U.S.? We (that is, David Park, Joe Bafumi, Boris Shor, and I) look at it two ways.
First, here’s a scatterplot of the 50 states, plotting average religious attendance vs. average income. (Religious attendance is on a -2 to 2 scale, from “never” to “more than once a week,” and average income was originally in dollars but has been rescaled to be centered at zero.):