This report analyzes the demographic, migratory, work, and service use patterns of farmworkers in southern New Jersey, up-state New York, north-central Kentucky, and eastern Pennsylvania counties, to discover possible causes of census omissions, and to suggest methods to improve coverage in the next Census. The study shows that the factors affecting Census coverage combine differently in each area making the development of area-specific enumeration strategies highly desirable. General recommendations are advanced where common barriers are encountered. Among factors that affect the outcomes of enumeration are worker mobility, type and supply of local housing, the worker's relationship with his employer, crew chief, or local service agencies. The worker's undocumented status, illegal employment, and his use of overcrowded, uninspected, and often illegally subdivided housing, are among the most important reasons for avoiding authorities. First time undocumented migrants, with little knowledge of the English language or American society, and who are isolated from the mainstream by having an indirect relationship with the grower through a crew chief, and frequently moving between work sites and scattered
camp housing, are least likely to be counted.