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Interactive Map of Race Seattle/King County 1940-2010

Explore race and residential patterns in this sequence of interactive maps. Move through the decades from 1950-2010. Select a race category, either by number of residents or percentage. Click a census tract for detailed information about a neighborhood which appears in the "Tract populations" window in middle column. These maps are hosted by Tableau Public and may take a few seconds to respond. If slow, refresh the page.

Please also see our reports on the history of Segregated Seattle with additional maps and our neighborhood-by-neighborhood examination of the nearly 500 racial restrictive covenants that enforced segregation through much of the 20th century.

See below for sources, credits, and definitions.


These maps and tables were created by Anna Yoon, Brian Lam, Gihoon Du, Jiang Wu, and Yurika Harada using data and shape files from the National Historical Geographic Information System (NHGIS). The work was a class project for Geography 469 GIS Workshop taught by Professor Sarah Elwood-Faustino Spring 2017.

Source: calculated from Steven Manson, Jonathan Schroeder, David Van Riper, and Steven Ruggles. IPUMS National Historical Geographic Information System: Version 12.0 [Database]. Minneapolis: University of Minnesota. 2017. http://doi.org/10.18128/D050.V12.0

Note: The Census Bureau adds and adjusts the boundaries of census tracts nearly every decade. It also changes the data it reports and often the racial categories. For 1940, all nonwhites were reported as a combined category. In 1950, this became two categories, "Negroes" and "Other races." Since most of the "others" would have been Japanese, Chinese, and Filipinos with small numbers of Native Americans, we relabeled this as "Asian/other races." From 1960 on the Census Bureau reported each Asian nationality separately, but stopped the practice after 2000. It was not until 1970 that a reliable set of questions identified people of Hispanic heritage. That is also when Native Americans were first identified in census tract data.