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Population Aging Rate by Prefecture in Japan

The entire population in Japan was 127 million as of 2012 October. 25.1% of them (32 million) were over 65 years-old persons. The ratio of elderly people (65 and over) was the highest in Akita prefecture (31.6%), lowest in Okinawa (18.4%). 

The government estimates the proportion of elderly people will reach 43.8% in Akita in 2040.

The following shows the population aging rate by prefecture in 2013, and the estimated rate in 2040.

  2013 2040 Changes between 2013-2040
Prefecture Total population (x 1000) "65 or more" population (x 1000) Ratio of over "65 or more" (%) Ratio of "65 or more" (%)
Hokkaido  5,431 1,469 27.0 40.7 13.7
Aomori 1,335 373 27.9 41.5 13.6
Iwate 1,295 372 28.7 39.7 11.0
Miyagi 2,328 553 23.8 36.2 12.4
Akita 1,050 331 31.6 43.8 12.2
Yamagata 1,141 332 29.1 39.3 10.2
Fukushima 1,946 524 26.9 39.3 12.4
Ibaraki 2,931 728 24.8 36.4 11.6
Tochigi 1,986 480 24.2 36.3 12.1
Gunma 1,984 512 25.8 36.6 10.8
Saitama 7,222 1,661 23.0 34.9 11.9
Chiba 6,192 1,505 24.3 36.5 12.2
Tokyo 13,300 2,914 21.9 33.5 11.6
Kanagawa 9,079 2,033 22.4 35.0 12.6
Niigata 2,330 655 28.1 38.7 10.6
Toyama 1,076 309 28.7 38.4 9.7
Ishikawa 1,159 302 26.1 36.0 9.9
Fukui 795 214 27.0 37.5 10.5
Yamanashi 847 225 26.5 38.8 12.3
Nagano 2,122 600 28.3 38.4 10.1
Gifu 2,051 539 26.3 36.2 9.9
Shizuoka 3,723 966 26.0 37.0 11
Aichi 7,443 1,662 22.3 32.4 10.1
Mie 1,833 480 26.2 36.0 9.8
Shiga 1,416 319 22.5 32.8 10.3
Kyoto  2,617 676 25.8 36.4 10.6
Osaka 8,849 2,184 24.7 36.0 11.3
Hyogo 5,558 1,408 25.3 36.4 11.1
Nara 1,383 369 26.7 38.1 11.4
Wakayama 979 288 29.4 39.9 10.5
Tottori 578 163 28.2 38.2 10.0
Shimane 702 217 30.9 39.1 8.2
Okayama 1,930 524 27.1 34.8 7.7
Hiroshima  2,840 743 26.2 36.1 9.9
Yamaguchi 1,420 429 30.2 38.3 8.1
Tokushima 770 224 29.1 40.2 11.1
Kagawa 985 277 28.1 37.9 9.8
Ehime 1,405 404 28.8 38.7 9.9
Kochi 745 232 31.1 40.9 9.8
Fukuoka  5,090 1,230 24.2 35.3 11.1
Saga  840 219 26.1 35.5 9.4
Nagasaki 1,397 390 27.9 39.3 11.4
Kumamoto 1,801 491 27.2 36.4 9.2
Oita 1,178 337 28.6 36.7 8.1
Miyazaki 1,120 310 27.6 37.0 9.4
Kagoshima 1,680 467 27.8 37.5 9.7
Okinawa 1,415 260 18.4 30.3 11.9

 

Figure 1: Population aging rate by prefecture in 2013

Red means more aged prefectures and blue means not.

f:id:nbakki:20140801125940j:plain

Figure 2: Estimated population aging rate by prefecture in 2040

f:id:nbakki:20140801124842j:plain

The youngest Okinawa in 2040 (30.3%) equals the current most aged Akita (31.6%).

Source is Cabinet Office, Government Of Japan

www8.cao.go.jp/kourei/whitepaper/w-2014/zenbun/s1_1_2.html

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