Bounded Culture (co-culture) can be thought of as the “minority” of a community–people who live in one culture, but also practice another culture of their own. An example of co-culture would be the Hmong here, we live in American culture but we also have our own customs and beliefs. China town, Little Italy, etc. are results of co-culture here in America too. My understanding of Co-Culture is that it’s the culture your family has, where as dominant culture is the culture of the area/place you live in.
(The picture of the stands is of China Town from http://www.unige.ch/intl/erasmus/ULiverpool/site%20entier/PHOTO-EN.html)