Of course, D.C. isn't alone in its racial segregation. Plenty of big cities are similarly sorted. In fact, the D.C. Metro area scores 88th out of 318 metropolitan areas on the University of Michigan's dissimilarity index, when you compare the black and white populations.
What sets D.C. apart from many Metro areas that rank ahead of it, though, is that it has very large populations of both black and white residents. The D.C. Metro area is about one-quarter black, and the city proper is about half African American, with more blacks than whites. Only a few other major metropolitan areas that rank ahead of D.C. on the dissimilarity index -- Detroit, New Orleans, Memphis and Atlanta -- are as heavily African American.
So while D.C. might not be as segregated as some others ranking above it, its segregation is very apparent. As the images show, it almost divides the city right down the middle.