MIGRAT: A COMPUTER-ASSISTED INSTRUCTIONAL PROGRAM FOR THE SIMULATION OF MIGRATION

Primary individuals and the households that they head now compose a significant proportion of US households. This paper examines the regional and intraurban distribution of primary households. Macro-scale data from the 1960 and 1970 Censuses are used to examine the evolving regional patterns of primary individuals and households. Using intraurban data for the 1970's, the paper also examines the impact of recent rapid growth in the number of primary individuals on the spatial distribution of primary households within urban areas. Inferences are drawn with respect to the macro- and micro-scale distributions of primary individuals and households and the impact of continued growth of this subpopulation on urban form and population distribution.