According to ecological theory, the socioeconomic status of a minority group is inversely related to the group's level of residential segregation from the majority group. This article determines whether the level of black socioeconomic status is related to the level of black residential segregation in the city of Detroit and Detroit's suburbs. Data were obtained from the U.S. Bureau of Census, 1990 Summary Tape Files 4-A. The methods employed to measure residential segregation were the indexes of dissimilarity D and isolation P * . Indexes were computed by census tract to measure segregation and isolation between blacks and whites at the same level of occupation, income, or education. The results revealed that residential segregation between blacks and whites remained high (i.e., above 50%) in both the city and the suburbs despite comparable socioeconomic status. Blacks in the suburbs were more segregated and isolated than blacks in the city at each socioeconomic level.