This study is a description and analysis of significant population changes and of the components of population change in the North Central states, including Kentucky, 1940-50. Projections of the future population to 1975 are also included.
The economic subregion, a relatively homogeneous area sometimes cutting across state lines, is used as the most appropriate area for analysis. The 44 subregions wholly or partly in the North Central states represent combinations of 48 metropolitan and 125 non-metropolitan state economic areas, which are combinations of 1,094 counties in the 13 states.
The North Central states have had a history of continuous population growth. Population increased more than sixfold over the 6,386,000 persons in 1850 to 47,405,568 in 1950. In 1850, 91 percent of the population was rural; in 1950, only 42 percent. These percentages are according to the 1940 census definitions of urban and rural population which were used throughout this study. Between 1940 and 1950 a total of 9,667,884 births and 4,617,218 deaths occurred to the population of the region, resulting in a natural increase of nearly 12 percent. Net migration, however, removed 651,425 persons leaving a net increase in population of 4,399,241, or 10 percent over that of 1940.
Jehlik, Paul J. and Wakeley, Ray E.
"Population change and net migration in the north central states, 1940-50,"
Research Bulletin (Iowa Agriculture and Home Economics Experiment Station): Vol. 32
, Article 1.
Available at: https://lib.dr.iastate.edu/researchbulletin/vol32/iss430/1