Japan's prefectures: population pyramids and projections
Japan's population is projected to fall from 126.1 million (2020 census) to 104.7 million in 2050, a 17.0% decline. Choose a prefecture for its pyramid and municipalities, 2020–2050.
Share aged 65+ (2025)
35.0%〜40.1%33.7%〜35.0%31.5%〜33.5%29.7%〜31.4%22.8%〜29.0%
Select a prefecture on the map for its pyramid. Maps of population change and more are on the ranking pages.
| Prefecture | 2020 | 2050 | Change | 65+ (2020) | 65+ (2050) |
|---|---|---|---|---|---|
| Hokkaido | 5.2 million | 3.8 million | -26.9% | 32.1% | 42.6% |
| Aomori | 1.2 million | 754,751 | -39.0% | 33.7% | 48.4% |
| Iwate | 1.2 million | 783,242 | -35.3% | 33.6% | 45.9% |
| Miyagi | 2.3 million | 1.8 million | -20.5% | 28.1% | 39.4% |
| Akita | 959,502 | 560,429 | -41.6% | 37.5% | 49.9% |
| Yamagata | 1.1 million | 710,838 | -33.4% | 33.8% | 44.3% |
| Fukushima | 1.8 million | 1.2 million | -32.0% | 31.7% | 44.2% |
| Ibaraki | 2.9 million | 2.2 million | -21.7% | 29.7% | 40.0% |
| Tochigi | 1.9 million | 1.5 million | -22.3% | 29.1% | 39.6% |
| Gunma | 1.9 million | 1.5 million | -21.6% | 30.2% | 40.0% |
| Saitama | 7.3 million | 6.6 million | -9.7% | 27.0% | 35.5% |
| Chiba | 6.3 million | 5.7 million | -9.5% | 27.6% | 35.5% |
| Tokyo | 14 million | 14.4 million | +2.5% | 22.7% | 29.6% |
| Kanagawa | 9.2 million | 8.5 million | -7.7% | 25.6% | 35.0% |
| Niigata | 2.2 million | 1.5 million | -30.7% | 32.8% | 43.2% |
| Toyama | 1 million | 761,719 | -26.4% | 32.6% | 41.4% |
| Ishikawa | 1.1 million | 896,801 | -20.8% | 29.8% | 38.3% |
| Fukui | 766,863 | 572,885 | -25.3% | 30.6% | 40.3% |
| Yamanashi | 809,974 | 611,586 | -24.5% | 30.8% | 41.7% |
| Nagano | 2 million | 1.6 million | -22.8% | 32.0% | 41.6% |
| Gifu | 2 million | 1.5 million | -25.8% | 30.4% | 40.6% |
| Shizuoka | 3.6 million | 2.8 million | -22.1% | 30.1% | 39.6% |
| Aichi | 7.5 million | 6.7 million | -11.5% | 25.3% | 34.5% |
| Mie | 1.8 million | 1.3 million | -23.9% | 29.9% | 39.6% |
| Shiga | 1.4 million | 1.2 million | -13.5% | 26.3% | 36.7% |
| Kyoto | 2.6 million | 2.1 million | -19.5% | 29.3% | 38.5% |
| Osaka | 8.8 million | 7.3 million | -17.8% | 27.6% | 36.6% |
| Hyogo | 5.5 million | 4.4 million | -20.3% | 29.3% | 39.5% |
| Nara | 1.3 million | 950,365 | -28.2% | 31.7% | 43.3% |
| Wakayama | 922,584 | 631,619 | -31.5% | 33.4% | 43.7% |
| Tottori | 553,407 | 405,528 | -26.7% | 32.3% | 40.9% |
| Shimane | 671,126 | 496,994 | -25.9% | 34.2% | 39.7% |
| Okayama | 1.9 million | 1.5 million | -20.0% | 30.3% | 37.8% |
| Hiroshima | 2.8 million | 2.2 million | -20.4% | 29.4% | 37.4% |
| Yamaguchi | 1.3 million | 926,183 | -31.0% | 34.6% | 42.3% |
| Tokushima | 719,559 | 480,669 | -33.2% | 34.2% | 44.8% |
| Kagawa | 950,244 | 724,120 | -23.8% | 31.8% | 39.7% |
| Ehime | 1.3 million | 944,634 | -29.2% | 33.2% | 43.0% |
| Kochi | 691,527 | 450,980 | -34.8% | 35.5% | 45.6% |
| Fukuoka | 5.1 million | 4.5 million | -12.8% | 27.9% | 35.1% |
| Saga | 811,442 | 620,873 | -23.5% | 30.6% | 39.3% |
| Nagasaki | 1.3 million | 868,817 | -33.8% | 33.0% | 43.4% |
| Kumamoto | 1.7 million | 1.4 million | -22.0% | 31.4% | 38.8% |
| Oita | 1.1 million | 841,343 | -25.1% | 33.3% | 40.5% |
| Miyazaki | 1.1 million | 796,631 | -25.5% | 32.6% | 40.8% |
| Kagoshima | 1.6 million | 1.2 million | -26.3% | 32.5% | 41.2% |
| Okinawa | 1.5 million | 1.4 million | -5.2% | 22.6% | 33.6% |
Prefecture rankings
- Prefectures by population
- Prefectures by share aged 65+
- Prefectures by share aged 75+
- Prefectures by share aged 0–14
- Prefectures by population change, 2020–2050
Prefectures with the largest decline by 2050
- Akita（-41.6%）
- Aomori（-39.0%）
- Iwate（-35.3%）
- Kochi（-34.8%）
- Nagasaki（-33.8%）
- Yamagata（-33.4%）
- Tokushima（-33.2%）
- Fukushima（-32.0%）
- Wakayama（-31.5%）
- Yamaguchi（-31.0%）
Source: processed from the National Institute of Population and Social Security Research, Regional Population Projections for Japan (2023) (https://www.ipss.go.jp/pp-shicyoson/j/shicyoson23/t-page.asp). 2020 is the census; 2025 onwards are projections.