Got me thinking about other things:
-Hunters
-Gun owners
-Evangelicals
-Mormons (and "besides SLC")
-Emergent church Christians
-Native Americans
-Indians
-People who have been to an emoviolence show
-People who play Ingress
-Vegetarians
-Vegans
-German-Americans
-Norwegian-Americans
-Swedish-Americans
-Dutch-Americans
-Arab-Americans
-"Americans" on the Census.
In that regard it's actually probably some place like Provo - Less than half of SLC proper's population is Mormon today.
Yeah seems like it would be better to ask outside of utah, in which case its probably Boise or mesa.
