Migrants have organized at all times and in all cities and places. The processes of their accommodation, however, differ, with local authorities and other state institutions playing an important role in these processes. Offering comprehensive empirical insights both from recent sites of immigration in Southern Europe, as well as from places of more established immigration in the north, this book examines the accommodation of migrant organizations in different cities and the factors that affect this process. It thus sheds light on the manner in which the interplay of immigration regime, national integration policy and local responses shape the differing patterns and trajectories observed in the formation and action of migrant organizations across Europe.