In a normal escape, if there is such a thing, the idea is to slip away unnoticed. Many times there is at least a basic plan. In a catastrophic even there is no plan, there is no person on the outside. It would be straight up pilaging time. They might get around to the rape, but immediate pilaging would be there only means of sustenance. As an escaped prisoner your priority would be to secure a weapon, then use it to get food, water, drugs or whatever else you have been thinking about on the inside.
There will be no calling the cops, 911 won't work, no one is responding. In prison if you want something you take it if the person that owns it is weaker than you. I am very glad that the facility I work in is more than 30 miles from where I live and that it is the closest one. Getting home in an emergency would suck, but living in the woods has many benifits if you are home when the emergency occurs.