The projections of future populations by each municipalities (shi, ku, machi and mura) made by Statistical Information Institute for Consulting and Analysis (1997), under the assumption that the age-specific rates of fertility, mortality and net-migration for the period of 1990 to 1995 will be unchanged for the future, provides with the knowledge that 68% of the all municipalities of shi, machi and mura in 2000 and 92% of those in 2015 will present 20.0% or larger in the percentage of total population in the elderly aged 65 and over. Furthermore, according to this projections, more than a half of the all municipalities will record 30.0% or larger in the proportion of the elderly in 2020. Although there were no municipalities having the percentage in the elderly of 50.0% or larger in 1995, 136 municipalities will show 50.0% or larger in the proportion of the elderly in 2025 (Table 2).
Basing upon the population projections described above, all of the 13 large cities except for Sendai will present higher than 20% in the proportion in the elderly in 2015, when Kitakyushu, Tokyo, Kyoto and Osaka will exceed the national level of aging (25%). Thus, in some of large cities population aging will be further serious for the future (Table 10).
