Mobility studies in metropolitan areas have traditionally been focused on centrifugal out-migration from central cities in metropolitan areas. But in recent years, with the growth of metropolitan sub-urbs, more attention has been paid to suburban centers. Watanabe (1978) argues that intra-metropolitan migration in the Tokyo Metropolitan Area is com-posed of two main migration flow patterns, in-migration from non-metropolitan areas and out-migration from central Tokyo to its periphery. The purpose of the present study was to clarify the major flow patterns of intra-urban residential mo-bility in Ichinomiya City, which is included in the Nagoya Metropolitan suburban area and to exam-ine whether Watanabe's model can be applied to intra-urban residential mobility in a suburban core city. 922 movers were identified by using telephone directories published in 1990 and 1992. From the anal-ysis of zones divided by concentric circles centering on City Hall, it is clarified that the major flow pat-tern of migration in Ichinomiya City is from city core to peripheral zone. Then a questionnaire survey was conducted among migrants whose origin was the city core. Many of them are inter-urban migrants who moved from outside Ichinomiya City with a change of employ-ment. The major reason for intra-urban residential mobility is housing unit adjustment and 60.7% of sample households had moved into owner-occupied independent houses. There are migrants who flow out to the peripheral zone, and others who stay in the city core. Hayashi's Quantification Theory II was applied to distinguish the two types of migrants. As a result of the analysis, it was found that the important factors distinguishing them were type of present house, length of time spent at previous residence, and type of previous house. As a result, Watanabe's model can be fairly applied to the intra-urban residential mobility pat-terns in Ichinomiya City, which means that in the Nagoya Metropolitan Area there is not only a large concentric migration pattern centering around the metropolitan center but also a small concen-tric migration pattern centering around the suburban core city.