It seems that most apocalyptic novels I read are either about:
a) zombies created by some mutated virus
b) a natural or an environmental disaster of some kind
So it was with interest that I came across this list of the Ten Safest Places in the U.S. from Natural Disasters: http://finance.yahoo.com/news/top-10-safest-u-s–cities-from-natural-disasters-183608693.html
Maybe apocalyptic readers can create a Top 20 List, since this only covers places safe from some natural disasters and not from other factors….food for thought.