Animated map of population density in the U.S. (1790 – 2010)

The animated map of population density, made using Jonathan Schroeder’s county-level decadal estimates. Populations for intermediate years was interpolated by cubic splines to log-density; essentially, that means that it assumes a smooth change in the rate of growth for each county over time.

The Westward Expansion of the United States
Source: creatingdata.us

Related post:
U.S. Population Density (1990 – 2017)

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