The impact of population density on the likelihood of Aid to Dependent Children (ADC) clients becoming economically self-sufficient was examined through a study of 2,647 ADC recipients referred to a total of 8 comprehensive vocational assessment centers (CVACs) for ADC clients that were established in Ohio in 1992. Of the CVACs, two were from each of the following county types: super metro, metro, rural, and Appalachian. Overall, 58.8% of the individuals referred to CVACs showed up. The show-up rate was highest for the Appalachian counties (93.2%) and lowest for the super metro countries (39.0%). A random 8% (n=203) sample that was stratified by country type (based on population density) was drawn from each county in proportion to the number of clients who completed the CVA process. Information was collected regarding their education/work status and performance during the CVA process. Compared with their counterparts in rural and Appalachian counties, the CVA recipients from super metro and metro counties had higher reading and math grade equivalent scores and were more likely to be in education/work. The counties with midrange population density appeared to offer the best environment for increasing the economic self-sufficiency of ADC clients. (Contains 10 references.) (MN)