COTTonLINE's favorite demographer, Joel Kotkin writes in Forbes that income inequality is greatest in large urban centers like Manhattan (NY, not KS). It is also bad in places like Appalachia, the Rio Grande valley and the southwest border region.
It turns out that suburbs - although despised by urban planners - are places with relatively little income inequality. Plus cities of modest size are often places of considerable upward mobility.
Kotkin also links to a Bloomberg review of a book which summarizes economist Gregory Clark's research into the limits on social/economic mobility. See above for my post summarizing that review.
