Mississippi, generally speaking. Also high on the list, for me, is Bama, Louisiana, SC, Arkansas, West Virginia, Oklahoma, and Idaho. They all have redeeming communities and places, but in general, I don't want to live in any of those states. Before anyone asks, I've been to all of them.
But yeah, those three states clustered together... Louisiana, Mississippi, and Alabama seem to always be competing with one another for the most impoverished, crime ridden, and poorly educated of the states unfortunately.