How people are dispersed
Population density is one common method that demographers use to describe how a population is distributed and where people are located. This measure is commonly expressed as the number of people per square mile. As one might expect, larger numbers indicate a more concentrated population, where more people live closer to each other. County-level population density information is available from the Census Bureau.
1990 and 2000 Census data were compiled for South Dakota's state and county population densities, changes in population densities during that time, and the percent change in population density.
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