| Table 3 Percentage of Aged Population by Prefecture | |||||||
|
Area
|
1995 | 2000 | 2005 | 2010 | 2015 | 2020 | 2025 |
| nation | 14.6 | 17.2 | 19.6 | 22.0 | 25.2 | 26.9 | 27.4 |
| Hokkaido | 14.9 | 18.0 | 20.7 | 23.2 | 26.9 | 29.3 | 30.3 |
| Aomori | 16.0 | 19.5 | 22.1 | 24.0 | 27.2 | 29.7 | 31.0 |
| Iwate | 18.0 | 21.4 | 23.8 | 25.4 | 27.8 | 29.7 | 30.5 |
| Miyagi | 14.5 | 17.0 | 18.7 | 20.1 | 22.5 | 24.3 | 25.0 |
| Akita | 19.6 | 23.4 | 26.0 | 27.5 | 30.3 | 32.6 | 33.8 |
| Yamagata | 19.8 | 22.8 | 24.5 | 25.4 | 27.4 | 29.1 | 29.9 |
| Fukushima | 17.4 | 20.1 | 21.6 | 22.7 | 24.8 | 26.7 | 27.7 |
| Ibaragi | 14.2 | 16.2 | 18.0 | 20.2 | 23.2 | 25.2 | 25.9 |
| Tochigi | 14.8 | 16.9 | 18.5 | 20.4 | 23.4 | 25.6 | 26.4 |
| Gunma@ | 15.6 | 18.0 | 19.8 | 22.0 | 25.1 | 26.9 | 27.3 |
| Saitama | 10.1 | 12.5 | 15.4 | 18.8 | 22.3 | 23.9 | 24.2 |
| Chiba | 11.3 | 13.8 | 16.6 | 19.9 | 23.6 | 25.4 | 25.8 |
| Tokyo | 13.0 | 16.3 | 19.5 | 22.8 | 26.5 | 28.2 | 29.1 |
| Kanagawa | 11.0 | 13.7 | 16.6 | 19.9 | 23.4 | 25.0 | 25.5 |
| Niigata | 18.3 | 21.0 | 22.8 | 24.2 | 26.7 | 28.5 | 29.0 |
| Toyama | 17.9 | 20.6 | 22.5 | 24.8 | 28.5 | 30.0 | 30.3 |
| Ishikawa | 16.2 | 18.4 | 20.0 | 22.1 | 25.7 | 27.3 | 27.8 |
| Fukui | 17.7 | 20.3 | 22.0 | 23.7 | 26.5 | 28.0 | 28.7 |
| Yamanashi | 17.1 | 19.0 | 20.3 | 21.5 | 23.5 | 24.7 | 25.0 |
| Nagano | 19.0 | 21.2 | 22.5 | 24.0 | 26.0 | 26.9 | 27.0 |
| Gifu | 15.3 | 17.9 | 20.1 | 22.4 | 25.5 | 27.0 | 27.3 |
| Shizuoka | 14.8 | 17.6 | 20.0 | 22.7 | 25.9 | 27.7 | 28.5 |
| Aichi | 11.9 | 14.5 | 17.1 | 20.1 | 23.5 | 24.9 | 25.3 |
| Mie | 16.1 | 18.6 | 20.5 | 22.5 | 25.1 | 26.3 | 26.6 |
| Shiga | 14.1 | 15.9 | 17.2 | 18.8 | 21.4 | 22.5 | 22.8 |
| Kyoto | 14.8 | 17.3 | 19.6 | 22.4 | 26.1 | 27.4 | 27.5 |
| Osaka | 11.9 | 14.8 | 18.0 | 21.6 | 25.4 | 26.8 | 26.9 |
| Hyogo | 14.1 | 16.9 | 19.3 | 22.0 | 25.3 | 26.6 | 26.9 |
| Nara | 13.9 | 16.2 | 18.5 | 21.3 | 24.5 | 26.0 | 26.3 |
| Wakayama | 18.1 | 20.7 | 22.6 | 24.6 | 27.3 | 28.5 | 28.9 |
| Tottori | 19.3 | 21.9 | 23.4 | 24.6 | 27.1 | 28.8 | 29.6 |
| Shimane | 21.7 | 24.9 | 26.5 | 27.6 | 30.3 | 31.8 | 32.4 |
| Okatama | 17.4 | 20.0 | 21.7 | 23.8 | 26.8 | 27.9 | 28.2 |
| Hiroshima | 15.9 | 18.2 | 20.2 | 22.6 | 26.0 | 27.5 | 27.9 |
| Yamaguchi | 19.0 | 22.3 | 24.6 | 27.0 | 30.7 | 32.6 | 33.1 |
| Tokushima | 18.9 | 22.0 | 23.8 | 25.3 | 28.4 | 30.3 | 31.0 |
| Kagawa | 18.2 | 20.8 | 22.4 | 24.2 | 27.6 | 29.1 | 29.6 |
| Ehime | 18.5 | 21.4 | 23.4 | 25.3 | 28.6 | 30.6 | 31.4 |
| Kochi | 20.6 | 23.6 | 25.5 | 27.3 | 30.5 | 32.0 | 32.5 |
| Fukuoka | 14.8 | 17.2 | 19.2 | 21.1 | 24.1 | 25.8 | 26.3 |
| Saga | 17.8 | 20.2 | 21.7 | 22.8 | 25.1 | 27.1 | 28.1 |
| Nagasaki | 17.7 | 20.7 | 22.8 | 24.4 | 27.3 | 29.8 | 31.2 |
| Kumamoto | 18.3 | 21.1 | 22.9 | 24.1 | 26.5 | 28.5 | 29.4 |
| Oita | 18.6 | 21.6 | 23.6 | 25.3 | 28.3 | 30.3 | 31.1 |
| Miyazaki | 17.4 | 20.5 | 22.5 | 24.0 | 26.8 | 29.1 | 30.3 |
| Kagoshima | 19.7 | 22.6 | 24.2 | 24.9 | 26.9 | 28.9 | 30.2 |
| Okinawa | 11.7 | 13.9 | 16.1 | 17.1 | 19.1 | 21.7 | 23.3 |