Washington Post - The middle class lost ground again last year, falling to an all-time low in their share of how much income they take in, new census data released showed. People with incomes between $20,263 and $62,434 collectively earned less than 24 percent of all income in 2011, even though they made up 40 percent of the population. The dip was part of a long, steady decline dating back to at least the 1960s, when the middle class shared 29 percent of all income.
In contrast, the census data shows, the bottom fifth held its own as the poverty level flattened out, while the top fifth increased its share to half of all income. The top 5 percent gained the most income, rising almost 5 percent in a single year.