Middle Class New Yorkers Fleeing State - WSJ.com

"Between 2000 and 2008, the Empire State had a net domestic outflow of more than 1.5 million, the biggest exodus of any state, with most hailing from New York City. The departures also have perilous budget consequences, since they tend to include residents who are better off than those arriving. Statewide, departing families have income levels 13% higher than those moving in, while in New York County (home of Manhattan) the differential was even more severe. Those moving elsewhere had an average income of $93,264, some 28% higher than the $72,726 earned by those coming in."