How religious is Montana?

Just how religious is Montana? Given the highly personal nature of faith, there may be few concepts harder to quantify. However, the U.S. Religion Census makes an effort once a decade regardless, tallying the number of congregations associated with different denominations and their self-reported membership county-by-county across the nation.

Notwithstanding the "God's County" nickname regularly applied to Montana's landscape by faithful and secular-minded residents alike, the state actually ranks near the bottom of the nation in terms of its overall religiosity - or, at least, in the fraction...