THE PROCESS OF URBANIZATION is viewed as a worldwide phenomenon and a principal aspect of sociocultvral change in the Pacific. Methods for studying Pacific urbanization are discussed, then the process of urbanization in Guam is described as a case study. Agana, Guam, and its neighboring villages are regarded as a central urban district, exhibiting urban forms and performing urban functions for Guamanian society. Manifestations of urbanization elsewhere are compared with those in the Pacific and Guam to show basic similarities, while differences are considered only a consequence of sociological and geographic scale, [urbanization, Pacific, Guam, social change, urban anthropology]