[영문]This study examines the relative importance of demographic, resource, and assimilation statuses in explaining the living arrangements of foreign- and native-born Asian and Hispanic elders from 11 origins in 2000 and accounting for why these groups have higher levels of extended living than native-born Whites. Drawing on the 2000 Public Use Microdata 5% Sample (PUMS) files and using logistic regression, the findings show that demographic characteristics are the major determinants of elderly extended living, followed by resource availability, assimilation, and group origin. Assimilation, on the other hand, is the major determinant of group differences between native White and Asian and Hispanic elders. While findings provide support for assimilation theory, the persistence of differentials across Asian and Hispanic groups after controlling for model covariates, and modest increases in extended living for most native-born Asian and Hispanic groups as well as native Whites in the 1990s underscores the enduring nature of ethnic diversity in living arrangements.