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This volume has been designed to show, in particular, the smallest areas for which the data on each subject have been tabulated, and the greatest detail in which each classification has been made for any area. In the published reports, the tabulated data have been consolidated, first by combining the smaller areas into larger ones for the detailed classifications, and second by combining or condensing the classifications for the smaller areas.
It outlines all of the tabulations which have been made of the information collected in the 1930 Census of Population and Unemployment and the 1931 Special Census of Unemployment, and covers, therefore, both the statistics which have been published in the 1930 Population and Unemployment census volumes and the tabulated population and unemployment data which are unpublished.
Census statistics date back to 1790 and reflect the growth and change of the United States. Past census reports contain some terms that today’s readers may consider obsolete and inappropriate. As part of our goal to be open and transparent with the public, we are improving access to all Census Bureau original publications and statistics, which serve as a guide to the nation's history.
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