I think it's probably fair to say that in Utah, there is fairly strong social pressure to be a member of LDS. (58% of all denominations are LDS) Which gets you

I think it's probably fair to say that in Utah, there is fairly strong social pressure to be a member of LDS. (58% of all denominations are LDS) Which gets you as close to a single church as you can be in a democratic society. Combine that with the fact that LDS always seems to take a very pragmatic approach to things (little "vanity" churches, congregations are need-based), and I wouldn't be surprised if this is a fairly unique outcome. But... I don't know. And I can't really find much data on income distribution in individual congregations. Well, one paper from Pew, and it confirms that the LDS split is quite close to the national split: http://www.pewresearch.org/fact-tank/2016/10/11/how-income-varies-among-u-s-religious-groups/ http://www.pewresearch.org/fact-tank/2016/10/11/how-income-v... But still, nothing about how individual congregations sort.