Grocery Store Chains in Western US states?

[AXJ]

What are some major grocery store chains in the Utah / Colorado / Wyoming / Idaho region?

[Maegan]

Wow, I realize this is a couple weeks old and you might not be looking anymore, but I grew up in Colorado so just in case....

City Market is a popular chain in Colorado that doesn't seem to exist outside of that area. Albertson's and Safeway are the other big ones, but I have no idea if those are found elsewhere besides the western states.