This paper describes an ongoing initiative funded by the Annie E. Casey Foundation and the National Institute of Justice. Now under way, the initiative is designed to help address the formidable challenge created as large numbers of former prison inmates return to a relatively small number of inner-city neighborhoods. In this project, NNIP partners and other local data intermediaries are obtaining data on the prison populations to assess the timing and magnitude of the challenge in each neighborhood. They are then working with a number of local agencies, using information in their systems on available services and other neighborhood conditions to help them devise appropriate response strategies.