When I was in Lawrenceville (in the middle of the state, near Princeton), I was basically at the cut-off point between North Jersey and South Jersey accents, usage. Once you get south of Hamilton/Trenton, you start hearing folks drinking "Werter, " rooting for the "Iggles," and ordering "hewgies" instead of subs.
The folks from the pine barrens definitely talk different. They are old families and have an old NJ accent that I can’t capture—haven’t heard enough of it. The pine barren kids are identifiable by their absence from school as soon as the hunting season starts. Don’t call them pineys; in fact pine barrens is probably also politically incorrect now.