Preliminary releases from the Bureau of the Census show that all but 8 of the 69 counties in South Dakota have lost population since 1930, the total loss being 51,715 persons. The farm population suffered the greater loss. Although the farm population figures for 1940 have not been released, an estimate shows a loss of 82,631 persons from farms in South Dakota. On the other hand out of 100 towns in all parts of the state, for which preliminary figures have been released, 63 showed a gain, 36 showed a loss and one town had the same population.
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South Dakota Agricultural Experiment Station
Petheram, Vera and Kumlien, W. F., "Population Changes in South Dakota" (1940). Agricultural Experiment Station Rural Sociology Pamphlets (1940-1977). 1.