In developed nations around the world, the lower middle class is a subdivision of the greater middle class. Universally, the term refers to the group of middle class households or individuals who have not attained the status of the middle or upper middle class associated with the higher realms of the middle class, hence the name.[1][2][3][4][5][6][7][8]
In American society, the middle class may be divided into two or three sub-groups. When divided into two parts, the lower middle class, also sometimes simply referred to as "middle class", consists of roughly one third of households, roughly twice as large as the upper middle or managerial class. Common occupation fields are semi-professionals, such as lower-level managers, small business owners and skilled craftsmen. These individuals commonly have some college education or perhaps a Bachelor's degree and earn a comfortable living. Already among the largest social classes, rivaled only by the working class, the American lower middle class is diverse and growing.[9][10]
Though not common in sociological models, the middle class may be divided into three sections in vernacular language usage. In this system the term lower middle class relates to the demographic referred to as working class in most sociological models. 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.[11]
Top-level executives, high-rung politicians, heirs. Ivy League education common.
Upper class (1%)
Top-level executives, celebrities, heirs; income of $500,000+ common. Ivy league education common.
The super-rich (0.9%)
Multi-millionaires whose incomes commonly exceed $3.5 million or more; includes celebrities and powerful executives/politicians. Ivy League education common.
Highly-educated (often with graduate degrees) professionals & managers with household incomes varying from the high 5-figure range to commonly above $100,000.
The rich (5%)
Households with net worth of $1 million or more; largely in the form of home equity. Generally have college degrees.
Middle class (plurality/ majority?; ca. 46%)
College-educated workers with considerably higher-than-average incomes and compensation; a man making $57,000 and a woman making $40,000 may be typical.
Lower middle class (30%)
Semi-professionals and craftsmen with a roughly average standard of living. Most have some college education and are white-collar.
Lower middle class (32%)
Semi-professionals and craftsmen with some work autonomy; household incomes commonly range from $35,000 to $75,000. Typically, some college education.
Working class (30%)
Clerical and most blue-collar workers whose work is highly routinized. Standard of living varies depending on number of income earners, but is commonly just adequate. High school education.
Working class (32%)
Clerical, pink- and blue-collar workers with often low job security; common household incomes range from $16,000 to $30,000. High school education.
Working class (ca. 40–45%)
Blue-collar workers and those whose jobs are highly routinized with low economic security; a man making $40,000 and a woman making $26,000 may be typical. High school education.
Working poor (13%)
Service, low-rung clerical and some blue-collar workers. High economic insecurity and risk of poverty. Some high school education.
Lower class (ca. 14–20%)
Those who occupy poorly-paid positions or rely on government transfers. Some high school education.
Underclass (12%)
Those with limited or no participation in the labor force. Reliant on government transfers. Some high school education.
The poor (ca. 12%)
Those living below the poverty line with limited to no participation in the labor force; a household income of $18,000 may be typical. Some high school education.
References: Gilbert, D. (2002) The American Class Structure: In An Age of Growing Inequality. Belmont, CA: Wadsworth, ISBN0534541100. (see also Gilbert Model);
Thompson, W. & Hickey, J. (2005). Society in Focus. Boston, MA: Pearson, Allyn & Bacon; Beeghley, L. (2004). The Structure of Social Stratification in the United States. Boston, MA: Pearson, Allyn & Bacon.
1 The upper middle class may also be referred to as "Professional class" Ehrenreich, B. (1989). The Inner Life of the Middle Class. NY, NY: Harper-Collins.