Demographic data since 1970 indicate a reversal of the centuries-long process of increasing metropolitan concentration and a sharp diminution in the flow of black migrants to large cities. To date, there is no evidence of sharp shifts in the residential isolation of blacks. (Author/AM)

Investigates the racial and ethnic composition of neighborhoods in the Greater New York metropolitan area in the 1970-90 period, when the region was a major receiving ground for immigrant groups. Increasing racial and ethnic composition of some neighborhoods is counterbalanced by greater numbers of all-minority neighborhoods. (SLD)

Black migration to American suburbs accelerated from 1970-80, increasing the proportion of Blacks in suburbs throughout the United States. In the North Blacks moved disproportionately into communities with high Black concentrations, while in the South, many Black suburbs experienced an influx of white residents. (Author/IS)

Presents a sociological analysis of African-American population changes, based on U.S. Census data for 1980 and 1990. The restructuring of the U.S. economy and the urban redevelopment and reorganization of the postindustrial city are suggested as causes of the differentials in the African-American population. (SLD)

Measures black segregation at four geographic levels: state, county, city, and neighborhood, from 1900 to 1990. Cross-references data from the decennial U.S. census with dissimilarity and isolation indices. Concludes that segregation patterns have consistently evolved to minimize white contact with blacks. (MJP)