Violence during the Collapse wasn’t universal. Internecine violence following the Collapse was largely due to fighting over food, the rise of gangs or packs, and the urban exodus. Areas with low population levels, rural areas, and areas with a high social cohesion suffered far lower levels of violence than the obverse.
Utah had the lowest level of post-plague violence in the United States, precisely due to these factors. It had a much smaller population than most states, a largely suburban or rural population, and a generally higher level of social cohesion.
More, its population had significant stores of privately held food (the result of Church teachings), meaning hunger was a smaller concern. Although Utah residents went hungry much of the time, they never faced outright starvation, much less the famines that plagued, for example, LA.
The suburban sprawl of the Wasatch Front meant people could convert their backyards into gardens, supplying food for their families. This practice was widespread before the Collapse, but became ubiquitous after the Mormon Church collectivized food distribution for members in summer of 2016 (the Black Summer, when the famines were at their worst). In later years, after the fall 2016 harvest, Utah even began feeding refugees from other states in large numbers.
(Members mostly complied with the “United Order” food distribution plan, but there were many who left the Church over it. It was discontinued in 2018, after the worst of the famines had passed.)
By the time of the Reconciliation Conference, in 2018, Utah had pretty much recovered from the Collapse. Thanks to the Wyoming pipeline (and Salt Lake refineries), it even had a small supply of gasoline.
[Note: There is probably one more Utah post. Hopefully tomorrow.]