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Population Growth & Decline of Japan’s Prefectures From 1920-2020

Last Updated: October 30, 2025 Leave a Comment

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The video above shows the rise and now fall of Japan’s population by prefecture between 1920 and 2020. Japan’s population today is still 125% higher than it was a century ago, but as is well known has started to decline in recent years.

The maps and video are all the work of Wikimedia users Monaneko and Pekachu.

Here are the numbers:

2000-2020

Japan's population by prefecture in 2020

20202015201020052000Growth
Nationwide126,146,099127,094,745128,057,352127,767,994126,925,843-0.6%
Tokyo14,047,59413,515,27113,159,38812,576,60112,064,10116.4%
Kanagawa Prefecture9,237,3379,126,2149,048,3318,791,5978,489,9748.8%
Osaka Prefecture8,837,6858,839,4698,865,2458,817,1668,805,0810.4%
Aichi prefecture7,542,4157,483,1287,410,7197,254,7047,043,3007.1%
Saitama Prefecture7,344,7657,266,5347,194,5567,054,2436,938,0065.9%
Chiba Prefecture6,284,4806,222,6666,216,2896,056,4625,926,2856.0%
Hyogo Prefecture5,465,0025,534,8005,588,1335,590,6015,550,574-1.5%
Hokkaido5,224,6145,381,7335,506,4195,627,7375,683,062-8.1%
Fukuoka Prefecture5,135,2145,101,5565,071,9685,049,9085,015,6992.4%
Shizuoka Prefecture3,633,2023,700,3053,765,0073,792,3773,767,393-3.6%
Ibaraki Prefecture2,867,0092,916,9762,969,7702,975,1672,985,676-4.0%
Hiroshima Prefecture2,799,7022,843,9902,860,7502,876,6422,878,915-2.8%
Kyoto Prefecture2,578,0872,610,3532,636,0922,647,6602,644,391-2.5%
Miyagi Prefecture2,301,9962,333,8992,348,1652,360,2182,365,320-2.7%
Niigata Prefecture2,201,2722,304,2642,374,4502,431,4592,475,733-11.1%
Nagano Prefecture2,048,0112,098,8042,152,4492,196,1142,215,168-7.5%
Gifu Prefecture1,978,7422,031,9032,080,7732,107,2262,107,700-6.1%
Gunma Prefecture1,939,1101,973,1152,008,0682,024,1352,024,852-4.2%
Tochigi Prefecture1,933,1461,974,2552,007,6832,016,6312,004,817-3.6%
Okayama Prefecture1,888,4321,921,5251,945,2761,957,2641,950,828-3.2%
Fukushima Prefecture1,833,1521,914,0392,029,0642,091,3192,126,935-13.8%
Mie Prefecture1,770,2541,815,8651,854,7241,866,9631,857,339-4.7%
Kumamoto Prefecture1,738,3011,786,1701,817,4261,842,2331,859,344-6.5%
Kagoshima Prefecture1,588,2561,648,1771,706,2421,753,1791,786,194-11.1%
Okinawa Prefecture1,467,4801,433,5661,392,8181,361,5941,318,22011.3%
Shiga Prefecture1,413,6101,412,9161,410,7771,380,3611,342,8325.3%
Yamaguchi Prefecture1,342,0591,404,7291,451,3381,492,6061,527,964-12.2%
Ehime Prefecture1,334,8411,385,2621,431,4931,467,8151,493,092-10.6%
Nara Prefecture1,324,4731,364,3161,400,7281,421,3101,442,795-8.2%
Nagasaki Prefecture1,312,3171,377,1871,426,7791,478,6321,516,523-13.5%
Aomori Prefecture1,237,9841,308,2651,373,3391,436,6571,475,728-16.1%
Iwate Prefecture1,210,5341,279,5941,330,1471,385,0411,416,180-14.5%
Ishikawa Prefecture1,132,5261,154,0081,169,7881,174,0261,180,977-4.1%
Oita Prefecture1,123,8521,166,3381,196,5291,209,5711,221,140-8.0%
Miyazaki Prefecture1,069,5761,104,0691,135,2331,153,0421,170,007-8.6%
Yamagata Prefecture1,068,0271,123,8911,168,9241,216,1811,244,147-14.2%
Toyama Prefecture1,034,8141,066,3281,093,2471,111,7291,120,851-7.7%
Akita Prefecture959,5021,023,1191,085,9971,145,5011,189,279-19.3%
Kagawa Prefecture950,244976,263995,8421,012,4001,022,890-7.1%
Wakayama Prefecture922,584963,5791,002,1981,035,9691,069,912-13.8%
Saga Prefecture811,442832,832849,788866,369876,654-7.4%
Yamanashi Prefecture809,974834,930863,075884,515888,172-8.8%
Fukui Prefecture766,863786,740806,314821,592828,944-7.5%
Tokushima Prefecture719,559755,733785,491809,950824,108-12.7%
Kochi Prefecture691,527728,276764,456796,292813,949-15.0%
Shimane Prefecture671,126694,352717,397742,223761,503-11.9%
Tottori Prefecture553,407573,441588,667607,012613,289-9.8%

1975-1995

Japan's population by prefecture in 1990

19951990198519801975Growth
Nationwide125,570,246123,611,167121,048,923117,060,396111,939,64312.2%
Tokyo11,773,60511,855,56311,829,36311,618,28111,673,5540.9%
Kanagawa Prefecture8,245,9007,980,3917,431,9746,924,3486,397,74828.9%
Osaka Prefecture8,797,2688,734,5168,668,0958,473,4468,278,9256.3%
Aichi prefecture6,868,3366,690,6036,455,1726,221,6385,923,56915.9%
Saitama Prefecture6,759,3116,405,3195,863,6785,420,4804,821,34040.2%
Chiba Prefecture5,797,7825,555,4295,148,1634,735,4244,149,14739.7%
Hyogo Prefecture5,401,8775,405,0405,278,0505,144,8924,992,1408.2%
Hokkaido5,692,3215,643,6475,679,4395,575,9895,338,2066.6%
Fukuoka Prefecture4,933,3934,811,0504,719,2594,553,4614,292,96314.9%
Shizuoka Prefecture3,737,6893,670,8403,574,6923,446,8043,308,79913.0%
Ibaraki Prefecture2,955,5302,845,3822,725,0052,558,0072,342,19826.2%
Hiroshima Prefecture2,881,7482,849,8472,819,2002,739,1612,646,3248.9%
Kyoto Prefecture2,629,5922,602,4602,586,5742,527,3302,424,8568.4%
Miyagi Prefecture2,328,7392,248,5582,176,2952,082,3201,955,26719.1%
Niigata Prefecture2,488,3642,474,5832,478,4702,451,3572,391,9384.0%
Nagano Prefecture2,193,9842,156,6272,136,9272,083,9342,017,5648.7%
Gifu Prefecture2,100,3152,066,5692,028,5361,960,1071,867,97812.4%
Gunma Prefecture2,003,5401,966,2651,921,2591,848,5621,756,48014.1%
Tochigi Prefecture1,984,3901,935,1681,866,0661,792,2011,698,00316.9%
Okayama Prefecture1,950,7501,925,8771,916,9061,871,0231,814,3057.5%
Fukushima Prefecture2,133,5922,104,0582,080,3042,035,2721,970,6168.3%
Mie Prefecture1,841,3581,792,5141,747,3111,686,9361,626,00213.2%
Kumamoto Prefecture1,859,7931,840,3261,837,7471,790,3271,715,2738.4%
Kagoshima Prefecture1,794,2241,797,8241,819,2701,784,6231,723,9024.1%
Okinawa Prefecture1,273,4401,222,3981,179,0971,106,5591,042,57222.1%
Shiga Prefecture1,287,0051,222,4111,155,8441,079,898985,62130.6%
Yamaguchi Prefecture1,555,5431,572,6161,601,6271,587,0791,555,2180.0%
Ehime Prefecture1,506,7001,515,0251,529,9831,506,6371,465,2152.8%
Nara Prefecture1,430,8621,375,4811,304,8661,209,3651,077,49132.8%
Nagasaki Prefecture1,544,9341,562,9591,593,9681,590,5641,571,912-1.7%
Aomori Prefecture1,481,6631,482,8731,524,4481,523,9071,468,6460.9%
Iwate Prefecture1,419,5051,416,9281,433,6111,421,9271,385,5632.4%
Ishikawa Prefecture1,180,0681,164,6281,152,3251,119,3041,069,87210.3%
Oita Prefecture1,231,3061,236,9421,250,2141,228,9131,190,3143.4%
Miyazaki Prefecture1,175,8191,168,9071,175,5431,151,5871,085,0558.4%
Yamagata Prefecture1,256,9581,258,3901,261,6621,251,9171,220,3023.0%
Toyama Prefecture1,123,1251,120,1611,118,3691,103,4591,070,7914.9%
Akita Prefecture1,213,6671,227,4781,254,0321,256,7451,232,481-1.5%
Kagawa Prefecture1,027,0061,023,4121,022,569999,864961,2926.8%
Wakayama Prefecture1,080,4351,074,3251,087,2061,087,0121,072,1180.8%
Saga Prefecture884,316877,851880,013865,574837,6745.6%
Yamanashi Prefecture881,996852,966832,832804,256783,05012.6%
Fukui Prefecture826,996823,585817,633794,354773,5996.9%
Tokushima Prefecture832,427831,598834,889825,261805,1663.4%
Kochi Prefecture816,704825,034839,784831,275808,3971.0%
Shimane Prefecture771,441781,021794,629784,795768,8860.3%
Tottori Prefecture614,929615,722616,024604,221581,3115.8%

1950 – 1970

Japan's population by prefecture in 1960

19701965196019551950Growth
Nationwide103,720,06098,274,96193,418,50189,275,52983,199,63724.7%
Tokyo11,408,07110,869,2449,683,8028,037,0846,277,50081.7%
Kanagawa Prefecture5,472,2474,430,7433,443,1762,919,4972,487,665120.0%
Osaka Prefecture7,620,4806,657,1895,504,7464,618,3083,857,04797.6%
Aichi prefecture5,386,1634,798,6534,206,3133,769,2093,390,58558.9%
Saitama Prefecture3,866,4723,014,9832,430,8712,262,6232,146,44580.1%
Chiba Prefecture3,366,6242,701,7702,306,0102,205,0602,139,03757.4%
Hyogo Prefecture4,667,9284,309,9443,906,4873,620,9473,309,93541.0%
Hokkaido5,184,2875,171,8005,039,2064,773,0874,295,56720.7%
Fukuoka Prefecture4,027,4163,964,6114,006,6793,859,7643,530,16914.1%
Shizuoka Prefecture3,089,8952,912,5212,756,2712,650,4352,471,47225.0%
Ibaraki Prefecture2,143,5512,056,1542,047,0242,064,0372,039,4185.1%
Hiroshima Prefecture2,436,1352,281,1462,184,0432,149,0442,081,96717.0%
Kyoto Prefecture2,250,0872,102,8081,993,4031,935,1611,832,93422.8%
Miyagi Prefecture1,819,2231,753,1261,743,1951,727,0651,663,4429.4%
Niigata Prefecture2,360,9822,398,9312,442,0372,473,4922,460,997-4.1%
Nagano Prefecture1,956,9171,958,0071,981,4332,021,2922,060,831-5.0%
Gifu Prefecture1,758,9541,700,3651,638,3991,583,6051,544,53813.9%
Gunma Prefecture1,658,9091,605,5841,578,4761,613,5491,601,3803.6%
Tochigi Prefecture1,580,0211,521,6561,513,6241,547,5801,550,4621.9%
Okayama Prefecture1,707,0261,645,1351,670,4541,689,8001,661,0992.8%
Fukushima Prefecture1,946,0771,983,7542,051,1372,095,2372,062,394-5.6%
Mie Prefecture1,543,0831,514,4671,485,0541,485,5821,461,1975.6%
Kumamoto Prefecture1,700,2291,770,7361,856,1921,895,6631,827,582-7.0%
Kagoshima Prefecture1,729,1501,853,5411,963,1042,044,1121,804,118-4.2%
Okinawa Prefecture
Shiga Prefecture889,768853,385842,695853,734861,1803.3%
Yamaguchi Prefecture1,511,4481,543,5731,602,2071,609,8391,540,882-1.9%
Ehime Prefecture1,418,1241,446,3841,500,6871,540,6281,521,878-6.8%
Nara Prefecture930,160825,965781,058776,861763,88321.8%
Nagasaki Prefecture1,570,2451,641,2451,760,4211,747,5961,645,492-4.6%
Aomori Prefecture1,427,5201,416,5911,426,6061,382,5231,282,86711.3%
Iwate Prefecture1,371,3831,411,1181,448,5171,427,0971,346,7281.8%
Ishikawa Prefecture1,002,420980,499973,418966,187957,2794.7%
Oita Prefecture1,155,5661,187,4801,239,6551,277,1991,252,999-7.8%
Miyazaki Prefecture1,051,1051,080,6921,134,5901,139,3841,091,427-3.7%
Yamagata Prefecture1,225,6181,263,1031,320,6641,353,6491,357,347-9.7%
Toyama Prefecture1,029,6951,025,4651,032,6141,021,1211,008,7902.1%
Akita Prefecture1,241,3761,279,8351,335,5801,348,8711,309,031-5.2%
Kagawa Prefecture907,897900,845918,867943,823946,022-4.0%
Wakayama Prefecture1,042,7361,026,9751,002,1911,006,819982,1136.2%
Saga Prefecture838,468871,885942,874973,749945,082-11.3%
Yamanashi Prefecture762,029763,194782,062807,044811,369-6.1%
Fukui Prefecture744,230750,557752,696754,055752,374-1.1%
Tokushima Prefecture791,111815,115847,274878,109878,511-9.9%
Kochi Prefecture786,882812,714854,595882,683873,874-10.0%
Shimane Prefecture773,575821,620888,886929,066912,551-15.2%
Tottori Prefecture568,777579,853599,135614,259600,177-5.2%

1944 – 1948

Japan's population by prefecture in 1945

19481947194619451944Growth
Nationwide80,216,89678,101,47373,114,13671,998,10473,482,0929.2%
Tokyo5,417,8715,000,7774,183,0723,488,2847,279,256-25.6%
Kanagawa Prefecture2,317,5512,218,1202,019,9431,865,6672,474,354-6.3%
Osaka Prefecture3,515,2253,334,6592,976,1402,800,9584,412,953-20.3%
Aichi prefecture3,226,1163,122,9022,919,0852,857,8513,280,206-1.6%
Saitama Prefecture2,132,2212,100,4532,028,5532,047,2611,647,62529.4%
Chiba Prefecture2,140,5112,112,9172,008,5681,966,8621,659,34529.0%
Hyogo Prefecture3,156,8883,057,4442,826,1922,821,8923,224,376-2.1%
Hokkaido4,021,0503,852,8213,488,0133,518,3893,256,15723.5%
Fukuoka Prefecture3,312,5773,178,1342,906,6442,746,8553,066,4728.0%
Shizuoka Prefecture2,407,1022,353,0052,260,0592,220,3582,027,85618.7%
Ibaraki Prefecture2,044,5782,013,7351,940,8331,944,3441,656,67823.4%
Hiroshima Prefecture2,045,9232,011,4981,901,4301,885,4711,962,9504.2%
Kyoto Prefecture1,784,7531,739,0841,621,9981,603,7961,635,5289.1%
Miyagi Prefecture1,596,3071,566,8311,462,1001,462,2541,275,86225.1%
Niigata Prefecture2,435,4512,418,2712,326,8112,389,6531,994,81722.1%
Nagano Prefecture2,079,6822,060,0102,028,6482,121,0501,650,51126.0%
Gifu Prefecture1,524,8121,493,6441,444,0001,518,6491,266,00820.4%
Gunma Prefecture1,608,8941,572,7871,524,6351,546,0811,319,51721.9%
Tochigi Prefecture1,557,8601,534,3111,503,6191,546,3551,203,67929.4%
Okayama Prefecture1,650,2851,619,6221,538,6211,564,6261,333,30023.8%
Fukushima Prefecture2,026,4821,992,4601,918,7461,957,3561,599,39226.7%
Mie Prefecture1,451,1001,416,4941,371,8581,394,2861,209,26620.0%
Kumamoto Prefecture1,786,0581,765,7261,631,9761,556,4901,371,00530.3%
Kagoshima Prefecture1,766,5141,746,3051,629,7601,538,4661,594,00910.8%
Okinawa Prefecture---590,480
Shiga Prefecture872,775858,367831,306860,911691,97226.1%
Yamaguchi Prefecture1,505,5321,479,2441,375,4961,356,4911,357,36810.9%
Ehime Prefecture1,481,1061,453,8871,380,7001,361,4841,186,49124.8%
Nara Prefecture778,677779,935744,381779,685606,78928.3%
Nagasaki Prefecture1,565,5581,531,6741,417,9771,318,5891,490,8905.0%
Aomori Prefecture1,218,3251,180,2451,089,2321,083,2501,009,10420.7%
Iwate Prefecture1,294,2031,262,7431,217,1541,227,7891,104,04917.2%
Ishikawa Prefecture941,772927,743877,197887,510743,67226.6%
Oita Prefecture1,245,6891,233,6511,149,5011,124,513973,70727.9%
Miyazaki Prefecture1,052,4831,025,689957,856913,687839,55625.4%
Yamagata Prefecture1,346,4921,335,6531,294,9341,326,3501,083,56924.3%
Toyama Prefecture998,349979,229932,669953,834819,61421.8%
Akita Prefecture1,283,7101,257,3981,195,8131,211,8711,048,76922.4%
Kagawa Prefecture934,123917,673872,312863,700713,13431.0%
Wakayama Prefecture979,982959,999933,231936,006847,38815.6%
Saga Prefecture931,336917,797856,692830,431705,65132.0%
Yamanashi Prefecture815,485807,251796,973839,057634,89728.4%
Fukui Prefecture733,374726,264695,703724,856621,93317.9%
Tokushima Prefecture869,290854,811829,405835,763703,26023.6%
Kochi Prefecture866,385848,337797,876775,578693,05325.0%
Shimane Prefecture903,576894,267848,995860,275729,81923.8%
Tottori Prefecture592,863587,606557,429563,220476,28424.5%

1920 – 1940

Japan's population by prefecture in 1920

19401935193019251920Growth
Nationwide73,114,30869,254,14864,450,00559,736,82255,963,05330.6%
Tokyo7,354,9716,369,9195,408,6784,485,1443,699,42898.8%
Kanagawa Prefecture2,188,9741,840,0051,619,6061,416,7921,323,39065.4%
Osaka Prefecture4,792,9664,297,1743,540,0173,059,5022,587,84785.2%
Aichi prefecture3,166,5922,862,7012,567,4132,319,4942,089,76251.5%
Saitama Prefecture1,608,0391,528,8541,459,1721,394,4611,319,53321.9%
Chiba Prefecture1,588,4251,546,3941,470,1211,399,2571,336,15518.9%
Hyogo Prefecture3,221,2322,923,2492,646,3012,454,6792,301,79939.9%
Hokkaido3,273,8533,068,2822,812,3352,498,6792,359,18338.8%
Fukuoka Prefecture3,094,1322,755,8042,527,1192,301,6682,188,24941.4%
Shizuoka Prefecture2,017,8601,939,8601,797,8051,671,2171,550,38730.2%
Ibaraki Prefecture1,620,0001,548,9911,487,0971,409,0921,350,40020.0%
Hiroshima Prefecture1,869,5041,804,9161,692,1361,617,6801,541,90521.2%
Kyoto Prefecture1,729,9931,702,5081,552,8321,406,3821,287,14734.4%
Miyagi Prefecture1,271,2381,234,8011,142,7841,044,036961,76832.2%
Niigata Prefecture2,064,4021,995,7771,933,3261,849,8071,776,47416.2%
Nagano Prefecture1,710,7291,714,0001,717,1181,629,2171,562,7229.5%
Gifu Prefecture1,265,0241,225,7991,178,4051,132,5571,070,40718.2%
Gunma Prefecture1,299,0271,242,4531,186,0801,118,8581,052,61023.4%
Tochigi Prefecture1,206,6571,195,0571,141,7371,090,4281,046,47915.3%
Okayama Prefecture1,329,3581,332,6471,283,9621,238,4471,217,6989.2%
Fukushima Prefecture1,625,5211,581,5631,508,1501,437,5961,362,75019.3%
Mie Prefecture1,198,7831,174,5951,157,4071,107,6921,069,27012.1%
Kumamoto Prefecture1,368,1791,387,0541,353,9931,296,0861,233,23310.9%
Kagoshima Prefecture1,589,4671,591,4661,556,6901,472,1931,415,58212.3%
Okinawa Prefecture574,579592,494577,509557,622571,572
Shiga Prefecture703,679711,436691,631662,412651,0508.1%
Yamaguchi Prefecture1,294,2421,190,5421,135,6371,094,5441,041,01324.3%
Ehime Prefecture1,178,7051,164,8981,142,1221,096,3661,046,72012.6%
Nara Prefecture620,509620,471596,225583,828564,6079.9%
Nagasaki Prefecture1,370,0631,296,8831,233,3621,163,9451,136,18220.6%
Aomori Prefecture1,000,509967,129879,914812,977756,45432.3%
Iwate Prefecture1,095,7931,046,111975,771900,984845,54029.6%
Ishikawa Prefecture757,676768,416756,835750,854747,3601.4%
Oita Prefecture972,975980,458945,771915,136860,28213.1%
Miyazaki Prefecture840,357824,431760,467691,094651,09729.1%
Yamagata Prefecture1,119,3381,116,8221,080,0341,027,297968,92515.5%
Toyama Prefecture822,569798,890778,953749,243724,27613.6%
Akita Prefecture1,052,2751,037,744987,706936,408898,53717.1%
Kagawa Prefecture730,394748,656732,816700,308677,8527.8%
Wakayama Prefecture865,074864,087830,748787,511750,41115.3%
Saga Prefecture701,517686,117691,565684,831673,8954.1%
Yamanashi Prefecture663,026646,727631,042600,675583,45313.6%
Fukui Prefecture643,904646,659618,144597,899599,1557.5%
Tokushima Prefecture718,717728,748716,544689,814670,2127.2%
Kochi Prefecture709,286714,980718,152687,478670,8955.7%
Shimane Prefecture740,940747,119739,507722,402714,7123.7%
Tottori Prefecture484,390490,461489,266472,230454,6756.5%

Total Growth 1920 – 2020

20201920Growth 1920 - 2020
Nationwide126,146,09955,963,053125%
Tokyo14,047,5943,699,428280%
Kanagawa Prefecture9,237,3371,323,390598%
Osaka Prefecture8,837,6852,587,847242%
Aichi prefecture7,542,4152,089,762261%
Saitama Prefecture7,344,7651,319,533457%
Chiba Prefecture6,284,4801,336,155370%
Hyogo Prefecture5,465,0022,301,799137%
Hokkaido5,224,6142,359,183121%
Fukuoka Prefecture5,135,2142,188,249135%
Shizuoka Prefecture3,633,2021,550,387134%
Ibaraki Prefecture2,867,0091,350,400112%
Hiroshima Prefecture2,799,7021,541,90582%
Kyoto Prefecture2,578,0871,287,147100%
Miyagi Prefecture2,301,996961,768139%
Niigata Prefecture2,201,2721,776,47424%
Nagano Prefecture2,048,0111,562,72231%
Gifu Prefecture1,978,7421,070,40785%
Gunma Prefecture1,939,1101,052,61084%
Tochigi Prefecture1,933,1461,046,47985%
Okayama Prefecture1,888,4321,217,69855%
Fukushima Prefecture1,833,1521,362,75035%
Mie Prefecture1,770,2541,069,27066%
Kumamoto Prefecture1,738,3011,233,23341%
Kagoshima Prefecture1,588,2561,415,58212%
Okinawa Prefecture1,467,480571,572157%
Shiga Prefecture1,413,610651,050117%
Yamaguchi Prefecture1,342,0591,041,01329%
Ehime Prefecture1,334,8411,046,72028%
Nara Prefecture1,324,473564,607135%
Nagasaki Prefecture1,312,3171,136,18216%
Aomori Prefecture1,237,984756,45464%
Iwate Prefecture1,210,534845,54043%
Ishikawa Prefecture1,132,526747,36052%
Oita Prefecture1,123,852860,28231%
Miyazaki Prefecture1,069,576651,09764%
Yamagata Prefecture1,068,027968,92510%
Toyama Prefecture1,034,814724,27643%
Akita Prefecture959,502898,5377%
Kagawa Prefecture950,244677,85240%
Wakayama Prefecture922,584750,41123%
Saga Prefecture811,442673,89520%
Yamanashi Prefecture809,974583,45339%
Fukui Prefecture766,863599,15528%
Tokushima Prefecture719,559670,2127%
Kochi Prefecture691,527670,8953%
Shimane Prefecture671,126714,712-6%
Tottori Prefecture553,407454,67522%

And here’s Japan’s population split in 2:

Half of the Japanese population lives in the Red Line

Map found on reddit

Filed Under: Japan

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