Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)


Throughout Iowa's population history, migration of families and persons into, out of and within the state has played an important role in the growth, distribution and concentrations of the state's population.

Prior to 1900 the state gained more than a million persons through net immigration and since 1900 it has lost more than a million through net out-migration or the equivalent of two-fifths of its present population.

The turn of the century marked the entry of Iowa into the list of states with relatively stable population numbers characterized by a comparatively slow growth. About 1900, natural increase superseded in-migration as a source of population growth, and rural to urban migration became increasingly important in redistributing population in relation to employment opportunities and resources within the state.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.