Pretty much the entire country is in the kill zone and if they aren’t they will wish were if it ever does go off.
If (when?) Yellowstone goes off again I imagine that most of civilization will be gone. Between wiping out our food sources, destabilizing our country (Hey China - let’s attack them now!), and the world wide climate change (colder) that will affect crops around the world for tens of years - it would probably would be best to be in Cody, Wyoming when it blows.
I wouldn’t mind. A cool firearm museum, rodeos every Friday and Saturday night, etc.