National Institute on Aging

University of Cincinnati Researchers Produce a Racial Diversity Map of the Entire Nation

Tomasz Stepinski, a professor of geography at the University of Cincinnati, and his postdoctoral researcher Anna Dmowska who is now at Adam Mickiewicz University in Poznan, Poland, have produced a map of the United States that shows how the racial makeup of neighborhoods changed between 1990 and 2010. Users can zoom in to focus on a particular state, city, or even neighborhood. The maps are so detailed that information can be found for any 30-square-meter area in the country.

Professor Stepinski says that “people don’t realize that the United States is a diverse country but at the same time is still very segregated.”

An article about the project, “Comprehensive Framework for Visualizing and Analyzing Spatio-Temporal Dynamics of Racial Diversity in the Entire United States,” can be found here.


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  1. Frank Webster says:

    The map shows density but with no legend it is virtually impossible to determine what the colors mean. I can make an intelligent guess, but I would have preferred a map where the legend was available at the same time as the density measures.

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