It's worth mentioning here that measuring local inequality is exactly hat national level inequality indices such as the gini are bad at. In fact, the larger the area surveyed, the higher the inequality indices will be due to regional fluctuations. A person in the top 10% of upstate NY income would be lower middle in dc.

One of the things that I am wondering on that basis is how the state level inequality indices compare to the national indices of europe. They will still probably be higher, but almost certainly the discrepancy ill be smaller.