This paper sought to achieve two objectives: First, to identify the social correlates attributable to street-children in south-western Nigeria as well as predisposing factors to this behavior; second, it also tried to uncover the survival mechanisms of street children. The study was carried out in Ibadan and Lagos metropoles in south-western Nigeria. A pilot study was first conducted to clarify issues like location of the children on the streets, time of the day suitable for interview, and adequacy of the instruments. The main study involving a comparative 202 and 201 street-children and non-street children, respectively, was carried out using the questionnaire and case study approach in the two cities. Data analytical procedures involved both quantitative and qualitative methods.