Guided by an ecological perspective, the authors examined event, individual, structural/cultural, and family/community factors that shaped the psychological well-being of older adults displaced from New Orleans by Hurricane Katrina. The authors first established the negative effects of displacement on psychological well-being by comparing displaced older adults with permanent Baton Rouge residents. Displaced older persons' psychological well-being was positively related to their age and physical health. Older displaced women coped with displacement better than men. Avoidant coping was negatively related to the older adults' well-being, whereas spiritual coping showed no effect. The functioning of older persons' family was positively related to their psychological well-being, whereas dependence on people outside immediate family showed a negative relationship. Income, education, and race were largely unrelated to psychological well-being. Findings provide implications for future studies regarding the relationship between disaster and psychological well-being and provide practitioners with suggestions for work with older adults displaced by disasters. (Contains 1 figure and 4 tables.)