I live in Florida and my character is currently in New York. Not banned.
If you teleport or have 5-10 dragonites at lv 30+ yes it's easy for them to catch you. But if you use 3rd party and walk around in normal speed and not jumping from state to state it's harder for Niantic to catch you. Don't brag and cry later, just do your thing and milk it much as you can before your app gets shut down. Niantic is slowing closing down and suing all 3rd party apps that's using their api. They even shut down Pokevision which was only a tracking tool. So go cheat and milk it much as you can while you can quietly