We had them east of 95 in Maryland this past fall. In fact, We just got two more out of our tt yesterday. Somehow, they managed to survive the below freezing temps. 2012 was a very bad year though.
I don't think there is anywhere one can go that doesn't have some kind of bug problem. And stink bugs are pretty easy to get rid of and they don't bite. We picked up a colony of ladybugs in Virginia in December and are still shooing them out. Last week, here in Florida, we stopped an ant invasion as it was getting underway.