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Visualising 200 Years of U.S. Population Density

This animation shows the population density of U.S. counties between 1790 and 2010, showing the westward expansion of the country’s population.

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Comments

KyleOS

As one observer pointed out, it is a map of Westward Expansion through the United States.

KyleOS

Residents per square mile:

1800 – 6.1

1850 – 7.9

1900 – 21.5

1950 – 42.6

2000 – 79.6

2017 – 92.2