3/24/2024 0 Comments Population density map us 1890![]() ![]() So, ok, now I had the data, and I knew which kind of map I couldn’t make, how did I settle on an animated choropleth map? I had two inspirations: A fire destroyed most of the 1890 census materials, which led to the creation of the National Archives. It took only one year to calculate the total population of the United States in 1890 versus eight years for the 1880 census, and is a watershed moment in the history of computing. Incidentally, I think my favorite census was the 1890 census, which was the first to use punch cards for tabulation, in addition to handwritten forms. In 2011, as part of research for our Redistricting story, I had stumbled across NHGIS, a program run out of the University of Minnesota that has painstakingly collected census and geographic data from the 1790 to the 2010 censuses and provides it to researchers and journalists free of charge. When you are dealing with decennial censuses the exact ratio is impossible to know.Īnother problem, and the most important one to solve, was finding the data, but I had the answer. For example, if a particular county loses ten black people in a decade, where did they actually move to? The answer was unclear-it could be that five of them moved north and five of them died. But I couldn’t quite wrap my brain around how to apportion the changes between individual counties. My first impulse was to create a vector-based (as in math, not as in SVG) map, like the wind map Martin Wattenberg and Fernanda Viegas made, which would show the paths that African Americans took to northern cities over the decades. We also decided early on that it would be the lead art for the article. To accompany the story we wanted to make a map showing the Great Migration itself. But as the fantastic reporting by ProPublica reporter Nikole Hannah-Jones shows, the federal Housing and Urban Development agency has fallen short of its requirement to take affirmative steps to curb segregation in America’s cities and provide fair housing for everybody. The housing discrimination suffered by African Americans in their new cities led to calls for reforms, resulting in the Fair Housing Act of 1968. A little over a month ago, Al Shaw and I made an interactive map of the “Great Migration” of African Americans from the rural south to northern cities during the 20th century.
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