The movement of the population between rural and urban areas is both a major consequence and a major determinant of social change. From a sociological vantage point, this movement offers potential for significant transformation in sending and receiving communities alike, as various types of individuals (differentiated by age, sex, education, ethnicity, etc.) are added to and subtracted from the community. For the individual, the relocation may bring attendant challenges even as it brings new opportunities. Within the research community, the study of urban–rural population movement would be seen as a subdivision within the broader study of internal migration, urbanization, population redistribution, or migrant adjustment.