Not really, no. Many of the coastal cities are more stratified and economically segregated than many of the non-coastal ones, but they still have a sizable lowe

Not really, no. Many of the coastal cities are more stratified and economically segregated than many of the non-coastal ones, but they still have a sizable lower-class population. So the precarious people in the high-poverty areas are much more hidden from the "typical" view of someone with some money. Food deserts and gang violence - both accelerated by concentrated poverty - are a couple of ways this manifests in some of the "elite" cities.