http://religions.pewforum.org/Religion in the US - broken down by tradition and state.
(It would appear that Jews are the richest religious group (46% of Jews have an income over 100K), and pretty well educated though not as much as Hindus. That said, all the Hindus came over as graduate students :P I wonder what an educational picture of Jews under, say, 60 would look like--a lot of people from my grandparents' generation simply didn't have the chance to go to college.)
One thing I'm trying to work out is that the survey distinguishes between Anglicans and Episcopalians. The Episcopal Church is considered to be the American member of the Anglican Communion; I didn't even know there was a separate Anglican Church. It lists Church of England in parentheses. Are there really that many Anglicans in the US who consider themselves C of E and not Episcopalians? (0.3% of the US population apparently.)
Christian denominations always baffle me a little, though. Growing up, almost all the Christians I knew were Catholics. It never ceases to amaze me how many churches Protestants have! OK, Jews all go bicker and set up their own shuls at the drop of a hat but officially they all belong to one of a few groups.