A lot of people don't realize in large urban and suburban areas of America, $250,000 doesn't make you rich. You have got two kids in college at $60,000. If you're a boomer, you may have a dependent parent of some kind you're spending another $20,000 or $25,000 on. So we have to have a definition of what is the middle class.-- Tom Brokaw, Meet the Press, 12/30/12.
For the record, median household income in the US in 2011 was just over $50,000, according to the Census Bureau. Nearly 10% lower than it was in 1999. (Good luck with that college thing.)