This article does not have any sources. (January 2012)
The Middle class describes people who are not aristocrats nor working class or underclass. Depending on class model used, the middle class may make up anywhere from 45% to 49% of households in the United States. There is a lower middle class and an upper middle class. In Marxism, middle class is the class below the ruling class. The word bourgeoisie may also be used as a synonym of middle class.