There is the upper middle class
The lower middle class
The american middle class
The middle class millionaire
•Middle class is the group of people in contemporary society who are between the working class and upper class. This socioeconomic class includes professionals, highly skilled workers, and lower and middle management
The size of the middle class depends on how it is defined, whether by education, wealth, environment of upbringing, social network, manners or values, etc. These are all related, though far from deterministically dependent. The following factors are often ascribed in modern usage to a "middle class":
Achievement of tertiary education.
Holding professional qualifications, including academics, lawyers, engineers, politicians and doctors regardless of their leisure or wealth.
Belief in bourgeois values, such as high rates of house ownership and jobs which are perceived to be "secure."
Lifestyle. In the United Kingdom, social status has historically been linked less directly to wealth than in the United States, and has also been judged by pointers such as accent, manners, place of education, occupation and the class of a person's family, circle of friends and acquaintances.
Cultural identification. Often in the United States, the middle class are the most eager participants in pop culture whereas the reverse is true in Britain <2>.
Middle America
Middle America suggests a small town or suburb where people are predominantly middle class. The economy of Middle America is traditionally considered agricultural, though most Middle Americans now live in suburban locales, and a person may hold Middle American values while not living geographically in the Midwestern United States, and vice versa. <3> <4> The phrase Middle American values refers to more traditional or conservative politics like family values. There are many people who object to the notion that one group or subgroup of Americans defines its values or defines proper family values.
http://en.wikipedia.org/wiki/Middle_class