In 1987 the Indiana Task FOrce on Aging and Aged Persons with Developmental Disabilities was formed to address interagency planning and public policy issues related to this newly emerging population. Data were collected from major state agencies now serving either the aged or individuals with developmental disabilities to assess the portion of the population currently receiving services. These data were compared to population projections for 1990. Service needs in health care, residential services, day programming, and other support areas were identified. We discuss direct planning outcomes and indirect process outcomes related to increased interaction among state-agency employees.