Had heard of most of these places but Colorado City was news to me. I'd heard of the Jeffs guy but there's an entire town? Wow.
Census info about Colorado City:
Median age - 14 (60% of population under 18)
Among under 18's 102.7 males for every 100 females, while among over 18's 91.7 males per 100 females.
And the world's highest incidence of an extremely rare genetic condition which causes severe intellectual disability.