Changes and characteristics of the population of Iowa have been described in some detail by the analysis of census data (3, 19, 6, 4). Neither the census nor these special studies, however, give information concerning many differential factors that operate in different ways as important parts of the total migration picture.²

The present investigation was undertaken to obtain more specific information concerning the extent of selected mobility factors, their operation during the depression, their effect on population movements and their relation to certain rural problems, including problems of education, organization, tenancy and relief.