The implantation of the railroad in the state of São Paulo allowed the exploration and occupation of unpopulated areas. In the region of Alta Sorocabana, the railway gave rise to urban cores from its stations. This research studied two cities, Quatá and Paraguaçu Paulista, which emerged in this context and have common characteristics in its formation. The aim was to accomplish morphological analysis and understand the logic of the urban cores formation. The methodology was defined based on Panerai (2006) and Lamas (1993), focused on the study of the urban tissue and its forming elements, using bibliography and documentation available about the cities and fieldwork. It was concluded that these cities followed the standard in chessboard and was organized from the station and railway. It was observed that there was no aesthetics and urbanistic concern in these layouts implantation, whichare preserved, while the main modification was the esplanade occupation.