SLC is a bit weird honestly.
The PRIMARY areas of the city with more criminal activity/financially less stable/not as affluent is West Valley City, Kearns, and Magna.
MAIN Salt Lake, West Jordan, South Jordan, Herriman, Murray, Midvale, Sandy, Cottonwood Heights, and then the areas to the south as you head towards Orem are the areas that have at least LESS crime... and Bluffdale can be pretty "poor" looking too as it's right near the national guard base.
Case in point, I believe West Valley City, Kearns, Magna, and Taylorsville are all part of what I THINK is called the Granite School District.... or at least parts of all of them are.
Granite School District has it's own police force.
https://www.graniteschools.org/police/