Immigration is one of the most contentious fields of contemporary European urban policy. While the devel-opment of urban segregation is well documented in traditional immigration countries with population reg-ister data, there is a lack of detailed research on population dynamics in many countries and cities across Europe. This article examines ethnic residential segregation in Czechia in the period after the economic crisis of 2008. Special attention is paid to the trajectories of individual cities and their position in the urban hier-archy. Longitudinal population register data are used and segregation indicators of unevenness and expo-sure are computed for the largest cities using a detailed spatial grid. The results show a broad picture of decreasing segregation despite the continuously growing number of immigrants in the country. While the economic crisis temporarily halted immigration, the spatial patterns of immigrant dissimilarity did not change and more-established immigration gateway cities experienced an increase in spatial isolation. In the conclusion, the article calls for further discussion on ethnic residential segregation in post-socialist cities.