This paper outlines ethnic segregation in urban social space using the standard model of the Chicago School and complements recent empirical observations. Poverty areas, in particular, are ethnically highly segregated, while ethnic segregation has generally been declining for years. Starting points of social work are the promotion of education, counselling and sponsorship models as well as the promotion of participation in local political processes. On the one hand, they can mitigate the negative effects of ethnic segregation and, on the other, promote social advancement in a sustainable manner.