This report of congressional hearings on population movement and its implications for future planning focuses on the relative growth and decline in population within different geographic areas (both urban and rural) of the United States. Specific issues addressed include the effects these trends will have on school enrollments, family life, economic policies, the elderly, and migration. Strategies that might be employed by the Federal government in planning for population change and for developing alternative institutional approaches for dealing with these issues are discussed. An appendix includes prepared statements and additional related material submitted to the committee. (EB)