Prefectures by share aged 65+ (2030)

36.3%〜42.0%35.2%〜36.3%32.9%〜34.8%31.2%〜32.7%23.6%〜29.7%

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#	Prefecture	Aged 65+	2020
1	Akita	42.0%	37.5%
2	Aomori	38.6%	33.7%
3	Kochi	38.5%	35.5%
4	Tokushima	37.7%	34.2%
5	Iwate	37.6%	33.6%
6	Yamagata	37.6%	33.8%
7	Nagasaki	37.3%	33.0%
8	Yamaguchi	36.7%	34.6%
9	Wakayama	36.6%	33.4%
10	Ehime	36.3%	33.2%
11	Kagoshima	36.3%	32.5%
12	Fukushima	36.1%	31.7%
13	Niigata	35.9%	32.8%
14	Miyazaki	35.9%	32.6%
15	Shimane	35.8%	34.2%
16	Oita	35.8%	33.3%
17	Hokkaido	35.3%	32.1%
18	Nara	35.3%	31.7%
19	Tottori	35.2%	32.3%
20	Toyama	34.8%	32.6%
21	Yamanashi	34.6%	30.8%
22	Nagano	34.6%	32.0%
23	Kumamoto	34.3%	31.4%
24	Saga	33.8%	30.6%
25	Kagawa	33.7%	31.8%
26	Fukui	33.6%	30.6%
27	Gifu	33.3%	30.4%
28	Gunma	32.9%	30.2%
29	Shizuoka	32.9%	30.1%
30	Ibaraki	32.7%	29.7%
31	Mie	32.7%	29.9%
32	Tochigi	32.6%	29.1%
33	Ishikawa	32.3%	29.8%
34	Hyogo	32.0%	29.3%
35	Okayama	32.0%	30.3%
36	Hiroshima	31.5%	29.4%
37	Kyoto	31.3%	29.3%
38	Miyagi	31.2%	28.1%
39	Fukuoka	29.7%	27.9%
40	Chiba	29.2%	27.6%
41	Osaka	29.2%	27.6%
42	Shiga	29.1%	26.3%
43	Saitama	28.9%	27.0%
44	Kanagawa	27.9%	25.6%
45	Aichi	27.3%	25.3%
46	Okinawa	26.5%	22.6%
47	Tokyo	23.6%	22.7%

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.