At one SE KY (Appalachia) was considered among the most corrupt parts of the country, but I don’t know if the anti-poverty programs worked there. It’s an area one might not have thought of.
Back in the 1950’s, Life Magazine (it was reasonably fair back then) ran an article on Hudson County New Jersey as the most corrupt county in the Country.
Based on what I’ve heard about the place, it probably still is. A Democrat stronghold, they raise the dead there and let them vote. Not only that, they even change party affiliation from Republican to Democrat in gratitude!!!!