Millions of people around the world live as displaced persons, often for lengthy periods of time. Little, however, is known about the correlates of health outcomes in displaced populations. This research article used data from north-western Uganda and southern Sudan to understand if and how forced migration and resulting residential arrangements impact under-five mortality for long-term displaced and corresponding host populations. Multivariate logistic regression revealed that over the long-run forced migration and residential arrangement did not significantly impact under-five mortality.