A good candidate for this would be Seattle... but there aren't really any true ghetto areas in the city. Regardlessly, there are some neighborhoods with million dollar homes on the top of a street (the ones with views) and houses with window bars only a few blocks away (no view).
I think SE Seattle(Beacon Hill) is sort of a ghetto. Also Belltown. West Seattle and Del ridge have a huge contrast.
Ehh, Beachon Hill isn't that ghetto (well by Seattle standards I see your point, but maybe Im biased since I know the area pretty well). The difference between some points in High Point and the ridges in Del Ridge are pretty huge.