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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.
He suggests defining the middle class as everyone with incomes 50% lower to 50% higher than the median â that is, between 50% and 150% of the median income. Under this rule, a middle-class household could make anywhere from $26,829 to $80,485.