The problem with which this study is concerned is the description of the past and present trends in the process of urbanization in Nigeria. In addition, the study explores tribal practices and perspectives in Nigeria's urban areas, giving special attention to the bases for the continuous existence of these phenomena. The data used in the study are obtained from books, government documents of both the United States and Nigeria and the. United Nations demographic analysis documents. The study is divided into five chapters. Based on findings and research of this study, the conclusion is drawn that adaptation to Nigeria's urban life proceeds through modification of the traditional institutions and their combination with Western cultural values, technology and economic practices into a new social structure.