The growing ethnic and racial diversity of the United States is evident at all spatial scales. One of the striking features of this new mixture of peoples, however, is that this new diversity often occurs in tandem with racial concentration. This article surveys these new geographies from four points of view: the nation as a whole, states, large metropolitan areas, and neighborhoods. The analysis at each scale relies on a new taxonomy of racial composition that simultaneously appraises both diversity and the lack thereof (Holloway, Wright, and Ellis 2012). Urban analysis often posits neighborhood racial segregation and diversity as either endpoints on a continuum of racial dominance or mirror images of one another. We disturb that perspective and stress that segregation and diversity must be jointly understood—they are necessarily related, although not as inevitable binary opposites. Using census data from 1990, 2000, and 2010, the research points to how patterns of racial diversity and dominance interact across varying spatial scales. This investigation helps answer some basic questions about the changing geographies of racialized groups, setting the stage for the following articles that explore the relationship between geography and the participation of underrepresented groups in higher education.

中文翻译：

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美国种族多样性和种族隔离的模式：1990-2010


美国日益增长的民族和种族多样性在所有空间尺度上都是显而易见的。然而，这种新的民族混合体的显着特征之一是，这种新的多样性往往与种族集中同时发生。本文从四个角度对这些新地理区域进行了调查：国家整体、各州、大都市区和社区。每个尺度的分析都依赖于一种新的种族构成分类法，该分类法同时评估多样性和多样性的缺乏（Holloway、Wright 和 Ellis 2012）。城市分析经常将社区种族隔离和多样性视为种族统治连续体的端点或彼此的镜像。我们扰乱这种观点，并强调必须共同理解隔离和多样性——它们必然相关，尽管不是不可避免的二元对立。该研究利用 1990 年、2000 年和 2010 年的人口普查数据，指出了种族多样性和主导地位的模式如何在不同的空间尺度上相互作用。这项调查有助于回答有关种族群体地理分布变化的一些基本问题，为以下探讨地理与代表性不足群体参与高等教育之间关系的文章奠定基础。