CBPP: State-by-State Income Inequality

Center on Budget and Policy Priorities:  Pulling Apart: A State-by-State Analysis of Income Trends:

A state-by-state examination finds that income inequality has grown in most parts of the country since the late 1970s.  Over the past three business cycles prior to 2007, the incomes of the country’s highest-income households climbed substantially, while middle- and lower-income households saw only modest increases.

During the recession of 2007 through 2009, households at all income levels, including the wealthiest, saw declines in real income due to widespread job losses and the loss of realized capital gains.  But the incomes of the richest households have begun to grow again while the incomes of those at the bottom and middle continue to stagnate and wide gaps remain between high-income households and poor and middle-income households.  As of the late 2000s (2008-2010, the most recent data available at the time of this analysis):

Update:  Wall Street Journal: Liberal Blues.