American migrant and seasonal agricultural workers are a population needing categorical assistance due to low income, difficult working and living conditions, and a mobile lifestyle. The purpose of this study was to identify, describe, and analyze federally funded migrant services. This study, based on interviews with program officials and available literature, offers information on the following subjects, relating to federal migrant programs: (1) definitions and eligibility; (2) geographical locations and seasonal variations; (3) migrant services provided, funding levels, and numbers served; (4) identification, recruiting, and tracking; (5) coordination and duplication of services; and (6) data, databases, and evaluation methods. The study identified 16 migrant or migrant-related programs, each designed to provide a specific set of services. These included educational, health, nutritional, legal, and social services. Most federal programs awarded grants to state and local service agencies. The Department of Education funded three educational and one vocational rehabilitation program. Problems occur because official definitions of migrants vary. Also, data concerning size, location, and seasonal mobility of the population are subject to inconsistencies. A great deal of variation was found in the collected data. The most common method of outreach was staff visits to labor and housing camps. Federal officials recognize the need to coordinate their programs. The analysis indicates that duplication of federal migrant services is limited. Most of the programs are evaluated on the basis of numbers served and cost-effectiveness. Only education programs used improvement gains as effectiveness measures. (TES)