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Note: For purposes of this analysis, Stateline defines "middle class" as those households earning between two-thirds and twice the state's size-adjusted median household income.

*Household income is size-adjusted to represent a three-person household; 2000 and 2013 incomes are inflation-adjusted to 2016 using CPI-U-RS index from the Bureau of Labor Statistics

Sources: IPUMS-USA data on household incomes 2000-2016, Stateline analysis.