This paper aims to analyze the regional characteristics of the structure of households with the elderly by the time trends, using census data. The conclusions are as follows; 1. The proportion of stem family have been decreasing and that of the old single and the elderly couple have been increasing in all prefectures, 2. The number of the elderly in large city have been increasing rapidly. And so do the number of stem family. 3. The regional differences in the structure of households with the elderly tend to extend.
