To identify the states with the highest and lowest median household income, 24/7 Wall St. reviewed state data on income from the U.S. Census Bureau's 2012 American Community Survey (ACS). Based on Census treatment, median household income for all years is adjusted for inflation. We also reviewed unemployment data provided by the Bureau of Labor Statistics for 2012, as well as 2012 ACS data on health insurance coverage, employment and poverty.

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