Throughout the period of metropolitan expansion, a volume of the urban population had expanded outside the boundaries of larger cities. On the outskirts of the city, the traditional agricultural community is forced to transform into the urban way of life. First, population composition is utterly changed by the flow of urban movement. Then, the agricultural industry is disrupted as a result of a rapid built-up in these areas. In these trends, former dwellers (mostly farmers) have to experience occupational changes and newcomers also get no satisfaction from the residencial environment. These two groups of old dwellers and newcomers sometimes get into serious conflict over economical interests and residencial abodes as a result of rapid transformation making these issues into serious problems.
The social process of this new community can be observed in the two groups by the size of population and the speed at which changes occur. And social network analysis can help to understand the structure of the community at present. This essay tends to deal with a “chokai” community in Ichihara, Chiba, from these two points of view.