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Changes in agriculture and population on the Plains

Agricultural land and revenue boomed during World War I, but fell during the Great Depression and the 1930s. The agricultural land most affected by the Dust Bowl was 16 million acres (6.5 million hectares) of land in the Texas and Oklahoma panhandles. These 20 counties that the U.S. Department of Agriculture's Soil Conservation Service identified as the worst wind-eroded region were home to the majority of the Great Plains migrants during the Dust Bowl.

While migration from and between the Southern Great Plain States was greater than migration in other regions in the 1930s, the numbers of migrants from these areas had only slightly increased from the 1920s. The Dust Bowl and Great Depression thus did not trigger a mass exodus of southern migrants, but simply encouraged these migrants to keep moving where in other areas the Great Depression limited mobility due to economic issues, decreasing migration. While the population of the Great Plains did fall during the Dust Bowl and Great Depression, the drop was not caused by extreme numbers of migrants leaving the Great Plains but by of a lack of migrants moving from outside the Great Plains into the region.