Daftar prefektur Jepang berdasarkan populasi
Demografi historis prefektur di Jepang > 1920 hingga 1947

Populasi dalam tabel berikut diberikan sesuai dengan konsep populasi de facto untuk penghitungan orang.
Sumber: Sensus Luar Biasa Jepang (per 1 Oktober 1947),
| Prefektur | 1 Oktober 1947 | 26 Apr 1946 | 1 Nov 1945 | 22 Feb 1944 | 1 Oktober 1940 | 1 Oktober 1935 | 1 Oktober 1930 | 1 Oktober 1925 | 1 Oktober 1920 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Hokkaidō | 3.852.821 | 3.488.013 | 3.518.389 | 3.256.157 | 3.272.718 | 3.068.282 | 2.812.335 | 2.498.679 | 2.359.183 |
| Aomori-ken | 1.180.245 | 1.089.232 | 1.083.250 | 1.009.104 | 1.000.509 | 967.129 | 879.914 | 812.977 | 756.454 |
| Iwate-ken | 1.262.743 | 1.217.154 | 1.227.789 | 1.104.049 | 1.095.793 | 1.046.111 | 975.771 | 900.984 | 845.540 |
| Miyagi-ken | 1.566.831 | 1.462.100 | 1.462.254 | 1.275.862 | 1.271.238 | 1.234.801 | 1.142.784 | 1.044.036 | 961.768 |
| Akita-ken | 1.257.398 | 1.195.813 | 1.211.871 | 1.048.769 | 1.052.275 | 1.037.744 | 987.706 | 936.408 | 898.537 |
| Yamagata-ken | 1.335.653 | 1.294.934 | 1.326.350 | 1.083.569 | 1.119.338 | 1.116.822 | 1.080.034 | 1.027.297 | 968.925 |
| Fukushima-ken | 1.992.460 | 1.918.746 | 1.957.356 | 1.599.392 | 1.625.521 | 1.581.563 | 1.508.150 | 1.437.596 | 1.362.750 |
| Ibaraki-ken | 2.013.735 | 1.940.833 | 1.944.344 | 1.656.678 | 1.620.000 | 1.548.991 | 1.487.097 | 1.409.092 | 1.350.400 |
| Tochigi-ken | 1.534.311 | 1.503.619 | 1.546.355 | 1.203.679 | 1.206.657 | 1.195.057 | 1.141.737 | 1.090.428 | 1.046.479 |
| Gunma-ken | 1.572.787 | 1.524.635 | 1.546.081 | 1.319.517 | 1.299.027 | 1.242.453 | 1.186.080 | 1.118.858 | 1.052.610 |
| Saitama-ken | 2.100.453 | 2.028.553 | 2.047.261 | 1.647.625 | 1.608.039 | 1.528.854 | 1.459.172 | 1.394.461 | 1.319.533 |
| Chiba-ken | 2.112.917 | 2.008.568 | 1.966.862 | 1.659.345 | 1.588.425 | 1.546.394 | 1.470.121 | 1.399.257 | 1.336.155 |
| Tōkyō-to | 5.000.777 | 4.183.072 | 3.488.284 | 7.271.001 |  |  |  |  |  |
| Tōkyō-fu |  |  |  |  | 7.354.971 | 6.369.919 | 5.408.678 | 4.485.144 | 3.699.428 |
| Kanagawa-ken | 2.218.120 | 2.019.943 | 1.865.667 | 2.474.354 | 2.188.974 | 1.840.005 | 1.619.606 | 1.416.792 | 1.323.390 |
| Niigata-ken | 2.418.271 | 2.326.811 | 2.389.653 | 1.994.817 | 2.064.402 | 1.995.777 | 1.933.326 | 1.849.807 | 1.776.474 |
| Toyama-ken | 979.229 | 932.669 | 953.834 | 819.614 | 822.569 | 798.890 | 778.953 | 749.243 | 724.276 |
| Ishikawa-ken | 927.743 | 877.197 | 887.510 | 743.672 | 757.676 | 768.416 | 756.835 | 750.854 | 747.360 |
| Fukui-ken | 726.264 | 695.703 | 724.856 | 621.933 | 643.904 | 646.659 | 618.144 | 597.899 | 599.155 |
| Yamanashi-ken | 807.251 | 796.973 | 839.057 | 634.897 | 663.026 | 646.727 | 631.042 | 600.675 | 583.453 |
| Nagano-ken | 2.060.010 | 2.028.648 | 2.121.050 | 1.650.511 | 1.710.729 | 1.714.000 | 1.717.118 | 1.629.217 | 1.562.722 |
| Gifu-ken | 1.493.644 | 1.444.000 | 1.518.649 | 1.266.008 | 1.265.024 | 1.225.799 | 1.178.405 | 1.132.557 | 1.070.407 |
| Shizuoka-ken | 2.353.005 | 2.260.059 | 2.220.358 | 2.027.856 | 2.017.860 | 1.939.860 | 1.797.805 | 1.671.217 | 1.550.387 |
| Aichi-ken | 3.122.902 | 2.919.085 | 2.857.851 | 3.280.206 | 3.166.592 | 2.862.701 | 2.567.413 | 2.319.494 | 2.089.762 |
| Mie-ken | 1.416.494 | 1.371.858 | 1.394.286 | 1.209.266 | 1.198.783 | 1.174.595 | 1.157.407 | 1.107.692 | 1.069.270 |
| Shiga-ken | 858.367 | 831.306 | 860.911 | 691.972 | 703.679 | 711.436 | 691.631 | 662.412 | 651.050 |
| Kyōto-fu | 1.739.084 | 1.621.998 | 1.603.796 | 1.635.528 | 1.729.993 | 1.702.508 | 1.552.832 | 1.406.382 | 1.287.147 |
| Ōsaka-fu | 3.334.659 | 2.976.140 | 2.800.958 | 4.412.953 | 4.792.966 | 4.297.174 | 3.540.017 | 3.059.502 | 2.587.847 |
| Hyōgo-ken | 3.057.444 | 2.826.192 | 2.821.892 | 3.224.376 | 3.221.232 | 2.923.249 | 2.646.301 | 2.454.679 | 2.301.799 |
| Nara-ken | 779.935 | 744.381 | 779.685 | 606.789 | 620.509 | 620.471 | 596.225 | 583.828 | 564.607 |
| Wakayama-ken | 959.999 | 933.231 | 936.006 | 847.388 | 865.074 | 864.087 | 830.748 | 787.511 | 750.411 |
| Tottori-ken | 587.606 | 557.429 | 563.220 | 476.284 | 484.390 | 490.461 | 489.266 | 472.230 | 454.675 |
| Shimane-ken | 894.267 | 848.995 | 860.275 | 729.819 | 740.940 | 747.119 | 739.507 | 722.402 | 714.712 |
| Okayama-ken | 1.619.622 | 1.538.621 | 1.564.626 | 1.333.300 | 1.329.358 | 1.332.647 | 1.283.962 | 1.238.447 | 1.217.698 |
| Hiroshima-ken | 2.011.498 | 1.901.430 | 1.885.471 | 1.962.950 | 1.869.504 | 1.804.916 | 1.692.136 | 1.617.680 | 1.541.905 |
| Yamaguchi-ken | 1.479.244 | 1.375.496 | 1.356.491 | 1.357.368 | 1.294.242 | 1.190.542 | 1.135.637 | 1.094.544 | 1.041.013 |
| Tokushima-ken | 854.811 | 829.405 | 835.763 | 703.260 | 718.717 | 728.748 | 716.544 | 689.814 | 670.212 |
| Kagawa-ken | 917.673 | 872.312 | 863.700 | 713.134 | 730.394 | 748.656 | 732.816 | 700.308 | 677.852 |
| Ehime-ken | 1.453.887 | 1.380.700 | 1.361.484 | 1.186.491 | 1.178.705 | 1.164.898 | 1.142.122 | 1.096.366 | 1.046.720 |
| Kōchi-ken | 848.337 | 797.876 | 775.578 | 693.053 | 709.286 | 714.980 | 718.152 | 687.478 | 670.895 |
| Fukuoka-ken | 3.178.134 | 2.906.644 | 2.746.855 | 3.066.472 | 3.094.132 | 2.755.804 | 2.527.119 | 2.301.668 | 2.188.249 |
| Saga-ken | 917.797 | 856.692 | 830.431 | 705.651 | 701.517 | 686.117 | 691.565 | 684.831 | 673.895 |
| Nagasaki-ken | 1.531.674 | 1.417.977 | 1.318.589 | 1.490.890 | 1.370.063 | 1.296.883 | 1.233.362 | 1.163.945 | 1.136.182 |
| Kumamoto-ken | 1.765.726 | 1.631.976 | 1.556.490 | 1.371.005 | 1.368.179 | 1.387.054 | 1.353.993 | 1.296.086 | 1.233.233 |
| Ōita-ken | 1.233.651 | 1.149.501 | 1.124.513 | 973.707 | 972.975 | 980.458 | 945.771 | 915.136 | 860.282 |
| Miyazaki-ken | 1.025.689 | 957.856 | 913.687 | 839.556 | 840.357 | 824.431 | 760.467 | 691.094 | 651.097 |
| Kagoshima-ken | 1.746.305 | 1.629.760 | 1.538.466 | 1.594.009 | 1.589.467 | 1.591.466 | 1.556.690 | 1.472.193 | 1.415.582 |
| Okinawa-ken |  |  |  | 590.480 | 574.579 | 592.494 | 577.509 | 557.622 | 571.572 |
| Karafuto-fu |  |  |  | 391.825 |  |  |  |  |  |
| Jepang Utama | 78.101.473 | 73.114.136 | 71.998.104 | 73.456.141 | 73.114.308 | 69.254.148 | 64.450.005 | 59.736.822 | 55.963.053 |