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The professional class, also called the upper middle class, consists mostly of highly educated white collar salaried professionals, whose work is largely self-directed. In 2005, these household incomes commonly exceed $100,000 per year.
Share of households by income range. The middle class, if defined as households making between $35,000 and $100,000 a year, shrank in the final decades of the 20th century. For a welcome reason, though: More Americans moved up into what might be considered the upper middle class or the affluent.