In contrast to the abundant research on family relationships during adolescence, the nature of family interactions during young adulthood remains comparatively unexamined. The current study explored ethnic differences in young adults' interactions with parents and siblings, the role of other activities in young adults' family interactions, and the association of family interactions with young adults' psychological distress and well-being. A total of 220 young adults (M[subscript age] = 25.5 years) from Latin American, East Asian, Filipino, and European backgrounds in the United States reported their family interactions, daily activities, and psychological distress and well-being using daily diaries for 14 days. As expected, time spent in work, school, and other relationships was found to conflict with time spent being with, and helping, family members. Leisure time and conflict with parents and siblings had significance for psychological distress and well-being. Other findings suggested a potentially higher level of family importance and connectedness among young adults from Filipino backgrounds as compared to their peers. (Contains 4 tables.)