Prefectures by share aged 75+ (2040)

24.5%〜29.6%23.4%〜24.3%21.5%〜23.3%20.2%〜21.5%14.0%〜19.0%

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#	Prefecture	Aged 75+	2020
1	Akita	29.6%	19.9%
2	Aomori	26.9%	17.2%
3	Kochi	26.4%	19.0%
4	Iwate	25.9%	17.8%
5	Yamagata	25.8%	17.9%
6	Tokushima	25.7%	17.5%
7	Nagasaki	25.7%	16.9%
8	Fukushima	24.7%	16.0%
9	Kagoshima	24.7%	16.8%
10	Wakayama	24.5%	17.7%
11	Ehime	24.3%	17.3%
12	Miyazaki	24.3%	16.8%
13	Niigata	24.1%	17.0%
14	Yamaguchi	24.1%	18.3%
15	Nara	23.9%	16.4%
16	Hokkaido	23.8%	16.4%
17	Oita	23.8%	17.4%
18	Tottori	23.7%	16.8%
19	Shimane	23.4%	18.4%
20	Yamanashi	23.3%	16.1%
21	Nagano	23.0%	17.4%
22	Kumamoto	23.0%	16.4%
23	Toyama	22.7%	17.0%
24	Saga	22.7%	15.6%
25	Fukui	22.4%	16.0%
26	Gifu	21.9%	15.7%
27	Kagawa	21.9%	16.4%
28	Gunma	21.6%	15.3%
29	Ibaraki	21.5%	14.6%
30	Shizuoka	21.5%	15.6%
31	Tochigi	21.4%	14.0%
32	Mie	21.3%	15.7%
33	Ishikawa	21.0%	15.2%
34	Miyagi	20.8%	14.0%
35	Hyogo	20.8%	15.2%
36	Okayama	20.7%	16.1%
37	Hiroshima	20.3%	15.3%
38	Kyoto	20.2%	15.4%
39	Shiga	19.0%	13.1%
40	Fukuoka	19.0%	14.0%
41	Osaka	18.3%	14.6%
42	Chiba	18.2%	14.0%
43	Saitama	18.1%	13.5%
44	Kanagawa	17.7%	13.3%
45	Okinawa	17.6%	10.8%
46	Aichi	17.2%	13.0%
47	Tokyo	14.0%	12.1%

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.