The Emerging Geography of Inequality

Since the 1970s there has been a well-documented and persistent increase in income inequality in the United States. As the country slowly emerges out of a deep recession, it is instructive to seek out the geographic variation by states in the degree of inequality and the variation in both median and mean incomes.

Data in this article are for households (basically IRS data), for 2009-2011. Median household income is considered the "typical" income of an area. The mean income is the aggregate income of all households in an area, divided by the number of households. This latter measure can be heavily influenced by high numbers of very affluent as well as poor households.

by Richard Morrill

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