Prefectures by share aged 65+ (2020)

33.3%〜37.5%32.0%〜33.2%30.2%〜31.8%28.1%〜30.1%22.6%〜27.9%

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#	Prefecture	Aged 65+	2020
1	Akita	37.5%	37.5%
2	Kochi	35.5%	35.5%
3	Yamaguchi	34.6%	34.6%
4	Shimane	34.2%	34.2%
5	Tokushima	34.2%	34.2%
6	Yamagata	33.8%	33.8%
7	Aomori	33.7%	33.7%
8	Iwate	33.6%	33.6%
9	Wakayama	33.4%	33.4%
10	Oita	33.3%	33.3%
11	Ehime	33.2%	33.2%
12	Nagasaki	33.0%	33.0%
13	Niigata	32.8%	32.8%
14	Toyama	32.6%	32.6%
15	Miyazaki	32.6%	32.6%
16	Kagoshima	32.5%	32.5%
17	Tottori	32.3%	32.3%
18	Hokkaido	32.1%	32.1%
19	Nagano	32.0%	32.0%
20	Kagawa	31.8%	31.8%
21	Fukushima	31.7%	31.7%
22	Nara	31.7%	31.7%
23	Kumamoto	31.4%	31.4%
24	Yamanashi	30.8%	30.8%
25	Fukui	30.6%	30.6%
26	Saga	30.6%	30.6%
27	Gifu	30.4%	30.4%
28	Okayama	30.3%	30.3%
29	Gunma	30.2%	30.2%
30	Shizuoka	30.1%	30.1%
31	Mie	29.9%	29.9%
32	Ishikawa	29.8%	29.8%
33	Ibaraki	29.7%	29.7%
34	Hiroshima	29.4%	29.4%
35	Kyoto	29.3%	29.3%
36	Hyogo	29.3%	29.3%
37	Tochigi	29.1%	29.1%
38	Miyagi	28.1%	28.1%
39	Fukuoka	27.9%	27.9%
40	Chiba	27.6%	27.6%
41	Osaka	27.6%	27.6%
42	Saitama	27.0%	27.0%
43	Shiga	26.3%	26.3%
44	Kanagawa	25.6%	25.6%
45	Aichi	25.3%	25.3%
46	Tokyo	22.7%	22.7%
47	Okinawa	22.6%	22.6%

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.