Likewise. All negative or positive aspects of the religion aside, the geographical aspect to Mormon congregations build affinity networks quickly. This is both an asset (it can integrate you into a community quickly) while also being a liability (more MLM and Ponzi schemes).
I learned this weekend this geographic designation for local congregations is shared among the Amish, where congregation (to my understanding and happy to be corrected) are between 20-40 families.
Bernie Madoff is the classic example, his affinity fraud targeted wealthy Jewish individuals, foundations, and charities. In terms of relative frequency though, good question. Utah is an oddity where state-level stats are a decent estimate for Mormons, given the 70% membership. It would be harder to get equivalent stats for Jewish or Amish communities.
I learned this weekend this geographic designation for local congregations is shared among the Amish, where congregation (to my understanding and happy to be corrected) are between 20-40 families.