Currently, marketing corporations and investment houses classify those with household incomes exceeding $75,000 as mass affluent, while sociologist Leonard Beeghley identifies all those with a net worth of $1 million or more as "rich."
He has been covering the socio-economic class structure of the United States in five volumes since 1978.
Yet some class models, such as those by sociologist Leonard Beeghley, suggest the middle class to be one cohesive socio-economic demographic, including the demographics otherwise referred to as lower, simply middle or upper middle class in one group comprising about 45% of households.
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