http://www.arcgis.com/home/webmap/viewer.html?webmap=b5501cc71fe44f8d9a0df362ea6aebb3
Here is a useful Zombie map- this plots “social vulnerability”, by county. Plots that county’s liklihood of serious problems if something goes awry, like a Zombie Apocalypse. Or nationwide power/natural gas blackout.
I don’t know about that map. It shows areas near where I live as light colored where I wouldn’t drive into in the daytime without a gun. It shows areas as dark that I think are very safe.