8 money mistakes the middle class keeps making

Sean Gallup/Stringer/Getty Images Abouthalf of Americans lived in middle-income households in 2014, according toPew Research. This demographic includes families with incomes two-thirds to double the U.S. median household income - or those earning between $42,000 and $125,000 (with cost-of-living adjustments for expensive metropolitan areas). America's middle class includes teachers, firefighters, and plumbers, but also engineers, construction managers, and chefs -- workers from all over the econ...