Prefectures by share aged 75+ (2025)

20.5%〜23.1%19.7%〜20.5%18.7%〜19.7%17.3%〜18.6%12.5%〜16.9%

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#	Prefecture	Aged 75+	2020
1	Akita	23.1%	19.9%
2	Kochi	22.7%	19.0%
3	Yamaguchi	21.9%	18.3%
4	Tokushima	21.2%	17.5%
5	Shimane	21.1%	18.4%
6	Wakayama	21.0%	17.7%
7	Toyama	20.8%	17.0%
8	Ehime	20.7%	17.3%
9	Oita	20.6%	17.4%
10	Aomori	20.5%	17.2%
11	Iwate	20.5%	17.8%
12	Yamagata	20.5%	17.9%
13	Nara	20.3%	16.4%
14	Niigata	20.1%	17.0%
15	Nagasaki	20.1%	16.9%
16	Nagano	20.0%	17.4%
17	Kagawa	19.9%	16.4%
18	Hokkaido	19.7%	16.4%
19	Tottori	19.7%	16.8%
20	Miyazaki	19.7%	16.8%
21	Kagoshima	19.3%	16.8%
22	Gifu	19.0%	15.7%
23	Okayama	19.0%	16.1%
24	Yamanashi	18.9%	16.1%
25	Kumamoto	18.9%	16.4%
26	Fukushima	18.8%	16.0%
27	Ishikawa	18.8%	15.2%
28	Fukui	18.8%	16.0%
29	Kyoto	18.7%	15.4%
30	Shizuoka	18.6%	15.6%
31	Gunma	18.5%	15.3%
32	Mie	18.5%	15.7%
33	Hiroshima	18.5%	15.3%
34	Hyogo	18.3%	15.2%
35	Saga	18.2%	15.6%
36	Ibaraki	17.9%	14.6%
37	Tochigi	17.4%	14.0%
38	Osaka	17.3%	14.6%
39	Chiba	16.9%	14.0%
40	Fukuoka	16.7%	14.0%
41	Miyagi	16.5%	14.0%
42	Saitama	16.5%	13.5%
43	Shiga	16.0%	13.1%
44	Kanagawa	15.9%	13.3%
45	Aichi	15.6%	13.0%
46	Tokyo	13.5%	12.1%
47	Okinawa	12.5%	10.8%

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.