A recent NY Time article:Why Can’t the Bronx Be More Like Brooklyn? http://nyti.ms/Ng8YTy
"The Bronx’s inability to catch up with the rest of the city’s phenomenal economic growth has been disconcerting. In the early 1970s, the Bronx and Brooklyn had similar average household incomes. Since then, though, the gap has grown significantly. The average Brooklyn resident is now around 23 percent richer than the average Bronxite; people in Queens are roughly 32 percent richer. (Manhattan residents are 265 percent wealthier; Staten Island residents, by the way, are 55 percent richer.)"