I'm Mississippi born and bred, but have lived outside my state and can honestly say that people are people, no matter where they are.
I'm sorry you have to come on and ask questions like this, but completely understand. And don't worry, we are not offended!
I finally got to visit Vicksburg a couple of years ago and found it to be quite charming. Just like any other town except it is on the Mississippi River bluffs, which I would find facinating if I lived there.
I do believe you will find you are welcomed in any neighborhood you relocate to as long as you come with a warm, friendly attitude. It is what is in a persons heart that means so much.
Welcome, I hope you find a great neighborhood and get settled in quickly.