The main purpose of this research is to analyze the variety of self-integration in accordance with the age of the elderly citizens and to verify the interactive effects of age groups and demographical characteristics on self-integration. For the purpose of this research, group of 603 elderly people who reside in Busan and are aged more than 65 were selected as participants. In this research, the elderly citizens were categorized into three age groups namely 65-74, 75-84, and above 85 years. From the results of the research we found out the following results: There were differences in self-integration across the various age groups; the age groups and the level of education had interactive effects on each other; there were differences in self-integration according to the level of education, marital status, type of co-living with children, economic status, and health status. The research showed significance in analyzing, positively the fact that public services which are designed for elder citizens need to be provided discriminatively and they should be suited for the various age groups.