U.S. Department of Commerce
 Housing Patterns


Table 5-2


Table 5-2. Residential Segregation Indexes for Blacks or African Americans by Characteristics of Selected Metropolitan Areas: 1980, 1990, 2000
(Weighted averages)
Characteristic Number of Metropolitan Areas Dissimilarity Index Isolation Index Delta Index Absolute Centralization Index Spatial Proximity Index
1980 1990 2000 1980 1990 2000 1980 1990 2000 1980 1990 2000 1980 1990 2000

Selected Metropolitan Areas
220 0.730 0.682 0.645 0.662 0.622 0.601 0.835 0.816 0.793 0.755 0.745 0.724 1.441 1.406 1.381

Region
Northeast 31 0.779 0.766 0.739 0.690 0.695 0.679 0.860 0.840 0.819 0.754 0.736 0.717 1.442 1.463 1.465
Midwest 53 0.822 0.788 0.741 0.726 0.691 0.651 0.909 0.894 0.859 0.816 0.814 0.788 1.598 1.570 1.526
South 114 0.660 0.605 0.581 0.632 0.585 0.581 0.776 0.764 0.748 0.711 0.710 0.695 1.348 1.312 1.303
West 22 0.714 0.625 0.559 0.580 0.490 0.435 0.867 0.839 0.823 0.806 0.773 0.740 1.478 1.364 1.283

Population Size
1 Million or more 43 0.780 0.732 0.694 0.717 0.680 0.657 0.869 0.845 0.815 0.805 0.787 0.757 1.543 1.502 1.469
500,000-999,999 33 0.685 0.632 0.597 0.605 0.551 0.529 0.807 0.795 0.776 0.684 0.687 0.684 1.307 1.273 1.263
Under 500,000 144 0.604 0.559 0.530 0.530 0.495 0.484 0.748 0.744 0.738 0.648 0.656 0.652 1.218 1.206 1.205

Percent Black/ African American
(Quartiles)
Under 6.2% 55 0.638 0.570 0.531 0.366 0.321 0.311 0.868 0.851 0.836 0.834 0.818 0.798 1.183 1.165 1.157
6.2-10.5% 55 0.715 0.661 0.613 0.523 0.474 0.446 0.857 0.843 0.817 0.720 0.709 0.688 1.234 1.222 1.223
10.5-19.1% 55 0.754 0.693 0.649 0.673 0.624 0.597 0.851 0.826 0.801 0.771 0.757 0.732 1.495 1.433 1.398
Over 19.1% 55 0.729 0.696 0.669 0.719 0.698 0.689 0.816 0.800 0.775 0.742 0.735 0.714 1.481 1.466 1.446

Percent Change (1980-2000) Black/ African American (Quartiles)
Under 25.4% 55 0.793 0.760 0.721 0.736 0.710 0.686 0.872 0.852 0.825 0.787 0.771 0.744 1.608 1.596 1.569
25.4-41.7% 55 0.718 0.696 0.673 0.678 0.669 0.659 0.819 0.808 0.791 0.738 0.734 0.722 1.373 1.368 1.361
41.7-63.1% 55 0.673 0.621 0.594 0.596 0.554 0.547 0.805 0.793 0.776 0.758 0.745 0.718 1.357 1.318 1.307
Over 63.1% 55 0.684 0.601 0.567 0.555 0.487 0.480 0.819 0.797 0.773 0.708 0.719 0.707 1.305 1.254 1.246
Note: Includes 220 Metropolitan Areas with at least 10 tracts and 3% or 20,000 or more Blacks or African Americans in 1980. Higher values indicate more segregation; the reference group is non-Hispanic Whites. Characteristics of metropolitan areas as of 1980. Segregation estimates are weighted by the size of the Black/ African American population.
Source: U.S. Census Bureau, Census 1980, 1990, and 2000 Summary File 1.

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Source: U.S. Census Bureau, Housing and Household Economic Statistics Division
Last Revised: September 30, 2011